How to make a GUI popup when you click a part?

I am making a game and it is hard bc this script is not working i am trying to make a gui pop up when you CLICK a part thats in workspace i tried this but it is not working can someone help me please

Quest1 = game.StarterGui.QuestLogs.Quest1
script.Parent.MouseClick:Connect(function()
Quest.Frame.Visible = true
end)

But its not working!! how do i make it work!!

You made it Quest instead of Quest1?

Quest1 = game.StarterGui.QuestLogs.Quest1
script.Parent.MouseClick:Connect(function()
Quest1.Frame.Visible = true
end)