Text Button won't work?

Different problem, it doesn't show up on my screen when I join the game -- The Text Button doesn't show?

-- Create ScreenGui
local screenGui = Instance.new("ScreenGui")
screenGui.Parent = script.parent

-- Create text button
local textButton = Instance.new("TextButton")
textButton.Parent = screenGui
textButton.Position = UDim2.new(0, 25, 0, 50)
textButton.Size = UDim2.new(0, 150, 0, 50)
textButton.BackgroundColor3 = BrickColor.White().Color
textButton.Text = "Shop"

-- Bind function to button click
textButton.MouseButton1Down:connect(function()
    textButton.Text = "This shop is still being made, check back later!"
end)

-- Script made by Zexisk [ Beginner Scripter ]