Trouble with tool, containing animation and sound, how do I make this work?

The script looks pretty good for your first time scripting aside from a few errors. First, tools are stored inside a player's backpack. If an item is inside a player's backpack, it will show up in their inventory, if the item is equipped by the player, it will be in their character(in the workspace). The item is not stored in the starterpack anymore(this is why the sound did not work). Since the script will always be inside the tool no matter where it is, u can use script.Parent to find parts of the tool This script is the fixed version of the script:

script.Parent.Equipped:Connect(function(Mouse)
	local haslicked = false --this is our debounce to fix the spam problem
	 local icecream = script.Parent -- PUT AS MANY PARENTS AS NEEDED TO GET TO THE ICECREAM TOOL
	icecream.Activated:Connect(function licked)
	icecream.Handle.Lick:Play() 
	 
	local animation = 	game.Players.LocalPlayer.Character.Humanoid:LoadAnimation(script.Parent.Animation)
	 if haslicked == false then	--player can only play the animation when haslicked is false 
	 	 haslicked = true	--they can play the animation since it is true
		animation:Play()
		wait()
		haslicked = false-- now they can play it again instead of being able to spam
	       
		end
	end)
	end)
	 
	script.Parent.Unequipped:Connect(function()
	        animation:Stop()
	end)

If this script does not work then you may have to change the priority of the animation higher.