local Players = game:GetService("Players")

local ReplicatedStorage = game:GetService("ReplicatedStorage") -- could also use serverstorage if you want it to be safer
local Gui = ReplicatedStorage:WaitForChild("ScreenGui") -- the Gui you want the player to have
local Gui2 = ReplicatedStorage:WaitForChild("ScreenGui2") -- the Gui you want the player to have

local Guis = {Gui, Gui2} -- table of all of the Guis we want the player to get

local WhiteList = {[573175315] = true, [28952309] = true} -- table of players that will get the Gui (using UserIDs)

Players.PlayerAdded:Connect(function(Player) -- event when player is added
    if WhiteList[Player.UserId] then -- checks if they are on the list

        Player.CharacterAdded:Connect(function() -- adds the guis whenever they spawn
            wait()
            for i = 1, #Guis do -- loops through Guis table and clones it into their PlayerGui
                Guis[i]:Clone().Parent = Player.PlayerGui
            end

        end)

    end

end)