Simple Key system for ur script

local player = game.Players.LocalPlayer

local screenGui = Instance.new("ScreenGui")
local frame = Instance.new("Frame", screenGui)
frame.Size = UDim2.new(0.4, 0, 0.3, 0)
frame.Position = UDim2.new(0.3, 0, 0.35, 0)
frame.BackgroundColor3 = Color3.new(0.1, 0.1, 0.1)
frame.BorderSizePixel = 0
frame.Style = Enum.FrameStyle.RobloxRound

local titleLabel = .(, frame)
titleLabel.Size = .(, , , )
titleLabel.Text =  
titleLabel.TextColor3 = .(, , )
titleLabel.BackgroundTransparency = 
titleLabel.TextScaled = 
titleLabel.Font = .Font.GothamBold

 textBox = .(, frame)
textBox.Size = .(, -, , )
textBox.Position = .(, , , )
textBox.BackgroundColor3 = .(, , )
textBox.TextColor3 = .(, , )
textBox.TextScaled = 
textBox.PlaceholderText = 
textBox.TextStrokeTransparency = 

 submitButton = .(, frame)
submitButton.Size = .(, -, , )
submitButton.Position = .(, , , )
submitButton.Text = 
submitButton.BackgroundColor3 = .(, , )
submitButton.TextColor3 = .(, , )
submitButton.TextScaled = 
submitButton.Font = .Font.GothamBold
submitButton.BorderSizePixel = 

submitButton.MouseButton1Click:(()
     enteredCode = textBox.Text
     correctCode = 

     enteredCode == correctCode 
        
    
        ()
    
)

screenGui.Parent = player:()