Health bar copy in scriptblox website only to work

local Players = game:GetService("Players")

local function createHealthBar(player)
    local character = player.Character
    if not character then return end

    local humanoid = character:FindFirstChild()
     head = character:()
      humanoid   head   

    
     oldGui = head:()
     oldGui  oldGui:() 

     billboardGui = .()
    billboardGui.Name = 
    billboardGui.Adornee = head
    billboardGui.Size = .(, , , )
    billboardGui.StudsOffset = .(, , )
    billboardGui.AlwaysOnTop = 
    billboardGui.Parent = head

     background = .()
    background.Size = .(, , , )
    background.BackgroundColor3 = .(, , )
    background.BorderSizePixel = 
    background.Parent = billboardGui

     healthBar = .()
    healthBar.Size = .(, , , )
    healthBar.BackgroundColor3 = .(, , )
    healthBar.BorderSizePixel = 
    healthBar.Parent = background

     healthText = .()
    healthText.Size = .(, , , )
    healthText.BackgroundTransparency = 
    healthText.TextColor3 = .(, , )
    healthText.TextStrokeTransparency = 
    healthText.Font = .Font.SourceSansBold
    healthText.TextSize = 
    healthText.Parent = background

      ()
         health = humanoid.Health
         maxHealth = humanoid.MaxHealth
         healthPercent = .(health / maxHealth, , )

        healthBar.Size = .(healthPercent, , , )
        healthText.Text = .(, .(health), .(maxHealth))
    

    humanoid.HealthChanged:(updateHealth)
    ()


  (character)
     player = Players:(character)
     player 
        (player)
    


 _, player  (Players:()) 
     player.Character 
        (player)
    
    player.CharacterAdded:(onCharacterAdded)


Players.PlayerAdded:((player)
    player.CharacterAdded:(onCharacterAdded)
)