Can someone tell me what's wrong with this GUI script?

I'm trying to make a book that when equipped and the clicked, makes a GUI that has writing In it. I get no errors, but nothing happens.

local tool = script.Parent
local Player = game.Players.LocalPlayer
local mouse = Player:GetMouse()
local StarterGui = game.StarterGui



tool.Equipped:connect(function(click)
	mouse.Button1Down:connect(function()
		local spell = Instance.new("ScreenGui")
		spell.Parent = StarterGui
		local spellb = Instance.new("TextLabel")
		spellb.Parent = spell
		spellb.Position = UDim2.new(0, 150 ,0 ,50)
		spellb.Size = UDim2.new(0, 150, 0, 25)
		spellb.Text = "Work In Progress"
		spellb.BackgroundColor3 = BrickColor.White().Color
	end)
	end)