1 command health bar

summon falling_block ~ ~.8 ~ {BlockState:{Name:redstone_block},Passengers:[{id:falling_block,BlockState:{Name:activator_rail}},{id:command_block_minecart,Command:"gamerule commandBlockOutput false"},{id:command_block_minecart,Command:"setblock ~ ~-2 ~ repeating_command_block{auto:1,Command:'fill ~ ~ ~ ~ ~2 ~ air'}"},{id:command_block_minecart,Command:" "},{id:command_block_minecart,Command:" "},{id:command_block_minecart,Command:"/summon iron_golem ~ ~ ~3 {Tags:[\"trfgdh2\"],Passengers:[{id:\"minecraft:text_display\",billboard:\"center\",Tags:[\"death_detector\",\"trfgdh\"],transformation:{left_rotation:[0f,0f,0f,1f],right_rotation:[0f,0f,0f,1f],translation:[0f,0.1f,0f],scale:[1f,1f,1f]},text:'            ',background:-10944763},{id:\"minecraft:text_display\",billboard:\"center\",transformation:{left_rotation:[0f,0f,0f,1f],right_rotation:[0f,0f,0f,1f],translation:[0f,0.03f,-0.01f],scale:[2f,1.6f,2f]},text:'       ',background:-16777216}]}"},{id:command_block_minecart,Command:""},{id:command_block_minecart,Command:"scoreboard objectives add health.mob dummy"},{id:command_block_minecart,Command:"scoreboard objectives add health health"},{id:command_block_minecart,Command:""},{id:command_block_minecart,Command:"/data merge storage 112 {left_rotation:[0f,0f,0f,1f],right_rotation:[0f,0f,0f,1f],translation:[0f,0.1f,0f],scale:[1f,1f,1f]}"},{id:command_block_minecart,Command:""},{id:command_block_minecart,Command:"/setblock ~1 ~0 ~0 minecraft:repeating_command_block[conditional=false,facing=up]{Command:\"execute as @e[tag=trfgdh2,type=minecraft:iron_golem] store result score @s health.mob run data get entity @s Health\",LastExecution:4066789L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{id:command_block_minecart,Command:""},{id:command_block_minecart,Command:"/setblock ~1 ~1 ~0 minecraft:chain_command_block[conditional=false,facing=up]{Command:\"execute unless entity @e[tag=trfgdh2,type=minecraft:iron_golem,scores={health.mob=..75}] run execute if entity @e[tag=trfgdh2,type=minecraft:iron_golem,scores={health.mob=..100}] run data modify entity @e[type=minecraft:text_display,limit=1,tag=trfgdh] background set value -8913152\",LastExecution:4067027L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{id:command_block_minecart,Command:""},{id:command_block_minecart,Command:"/setblock ~1 ~2 ~0 minecraft:chain_command_block[conditional=false,facing=up]{Command:\"execute unless entity @e[tag=trfgdh2,type=minecraft:iron_golem,scores={health.mob=..50}] run execute if entity @e[tag=trfgdh2,type=minecraft:iron_golem,scores={health.mob=..75}] run data modify entity @e[type=minecraft:text_display,limit=1,tag=trfgdh] background set value -15616\",LastExecution:4067774L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{id:command_block_minecart,Command:""},{id:command_block_minecart,Command:"/setblock ~1 ~3 ~0 minecraft:chain_command_block[conditional=false,facing=up]{Command:\"execute unless entity @e[tag=trfgdh2,type=minecraft:iron_golem,scores={health.mob=..25}] run execute if entity @e[tag=trfgdh2,type=minecraft:iron_golem,scores={health.mob=..50}] run data modify
entity @e[type=minecraft:text_display,limit=1,tag=trfgdh] background set value -32768\",LastExecution:4067953L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{id:command_block_minecart,Command:""},{id:command_block_minecart,Command:"/setblock ~1 ~4 ~0 minecraft:chain_command_block[conditional=false,facing=up]{Command:\"execute unless entity @e[tag=trfgdh2,type=minecraft:iron_golem,scores={health.mob=..0}] run execute if entity @e[tag=trfgdh2,type=minecraft:iron_golem,scores={health.mob=..25}] run data modify entity @e[type=minecraft:text_display,limit=1,tag=trfgdh] background set value -65536\",LastExecution:4068110L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{id:command_block_minecart,Command:""},{id:command_block_minecart,Command:"/setblock ~0 ~0 ~1 minecraft:repeating_command_block[conditional=false,facing=up]{Command:\"/data modify storage 112 scale[0] set value 0.011\",LastExecution:4068310L,LastOutput:{extra:[{translate:\"commands.data.storage.modified\",with:[\"minecraft:112\"]}],text:\"[20:55:14] \"},SuccessCount:1,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{id:command_block_minecart,Command:""},{id:command_block_minecart,Command:"/setblock ~0 ~1 ~1 minecraft:chain_command_block[conditional=true,facing=up]{Command:\"/execute store result storage 112 scale[0] float 0.011 run data get entity @e[type=minecraft:iron_golem,tag=trfgdh2,limit=1] Health\",LastExecution:4068513L,LastOutput:{extra:[{color:\"red\",extra:[{translate:\"argument.entity.notfound.entity\"}],text:\"\"}],text:\"[20:55:24] \"},SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{id:command_block_minecart,Command:""},{id:command_block_minecart,Command:"/setblock ~0 ~2 ~1 minecraft:chain_command_block[conditional=true,facing=up]{Command:\"/data modify entity @n[type=minecraft:text_display,tag=trfgdh] transformation set from storage minecraft:112\",LastExecution:4055084L,LastOutput:{extra:[{translate:\"commands.data.entity.modified\",with:[{hover_event:{action:\"show_entity\",id:\"minecraft:text_display\",name:{translate:\"entity.minecraft.text_display\"},uuid:[I;-1206304355,-115914881,-1534876406,1222150081]},insertion:\"b819419d-f917-477f-a483-a50a48d887c1\",translate:\"entity.minecraft.text_display\"}]}],text:\"[20:43:26] \"},SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:0b,powered:0b}"},{id:command_block_minecart,Command:""},{id:command_block_minecart,Command:"/setblock ~1 ~0 ~1 minecraft:repeating_command_block[conditional=false,facing=up]{Command:\"execute as @e[tag=death_detector] on vehicle unless data entity @s {DeathTime:0s} run data merge entity @n[type=minecraft:text_display,tag=trfgdh] {transformation:{left_rotation:[0f,0f,0f,1f],right_rotation:[0f,0f,0f,1f],translation:[0f,0.03f,-0.01f],scale:[0f,0f,0f]}}\",LastExecution:4069634L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{id:command_block_minecart,Command:""},{id:command_block_minecart,Command:"/setblock ~1 ~1 ~1 minecraft:chain_command_block[conditional=true,facing=up]{Command:\"execute as @e[tag=death_detector] on vehicle unless data entity @s {DeathTime:0s} on passengers run kill @s\",LastExecution:4063662L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:0b,powered:0b}"},{id:command_block_minecart,Command:""},{id:command_block_minecart,Command:""},{id:command_block_minecart,Command:""},{id:command_block_minecart,Command:" "},{id:command_block_minecart,Command:"execute align xz run kill @e[type=command_block_minecart,dy=0]"}]}