Rebirth/Level system

game.Players.LocalPlayer.CharacterAdded:wait()
local rebirthinng = false
script.Parent.Parent.Click.Frame.Frame2.Rebirth.MouseButton1Click:connect(function()
    if rebirthinng == false then
        local stats = game.Players.LocalPlayer:WaitForChild('All').Data
        local rebirthneed = stats.Rebirth.Value*10+10
        rebirthinng = true
        repeat
            wait(0.01)
            if rebirthneed <= stats.Level.Value then
                stats.EXP.Value = 0
                stats.Rebirth.Value = stats.Rebirth.Value + 1
                stats.Level.Value = stats.Level.Value - rebirthneed
            end
        until rebirthneed > stats.Level.Value
        rebirthinng = false
    end
end)

while wait(0.1) do
    local stats = game.Players.LocalPlayer:WaitForChild('All').Data
    local x = stats.Level.Value
    local need = math.ceil((x^2)*(x^2/4)+20)
    local crazypercent = stats.EXP.Value/need
    local fixp1 = crazypercent*100
    local textie2 = ''
    local able2 = true
    for i = 1, #tostring(fixp1) do
        if able2 == true then
            local check = string.sub(fixp1,i,i)
            if check ~= '.' and able2 == true then
                textie2 = string.sub(tostring(fixp1),1,i)
            else
                able2 = false
            end
        end
    end
    script.Parent.Parent.Click.Frame.Frame.RebirthLevelEXP.Text = 'Rebirth: '..stats.Rebirth.Value..'|Level: '..stats.Level.Value..'|XP: '..textie2..'%'
    script.Parent.Parent.Click.Frame.Frame.RebirthLevelEXP.Frame.Size = UDim2.new(crazypercent,0,1,0)
    local rebirthneed = stats.Rebirth.Value*10+10
    local crazypercentage = stats.Level.Value/rebirthneed
    local fixp2 = crazypercentage*100
    local able = true
    local textie = ''
    for i = 1, #tostring(fixp2) do
        if able == true then
            local check = string.sub(fixp2,i,i)
            if check ~= '.' and able == true then
                textie = string.sub(tostring(fixp2),1,i)
            else
                able = false
            end
        end
    end
    script.Parent.Parent.Click.Frame.Frame2.Rebirth.Frame.Size = UDim2.new(crazypercentage,0,1,0)
    script.Parent.Parent.Click.Frame.Frame2.Rebirth.Text = 'Rebirth: '..textie..'%'
    if need <= stats.EXP.Value then
        stats.Level.Value = stats.Level.Value + 1
        stats.EXP.Value = stats.EXP.Value - need
    end
end