Ignore Ignore Ignore ?

First: write your code with reasonable whitespace.

Lol = Workspace.BrickBuilding

script.Parent = game.Workspace == false

if true then do
	Lol = disabled
else
	F = Instance.new("Fire", Workspace.Player.Torso)
end

Now realize that there's no reason for that do. As Lua is saying, it doesn't expect a "do" right there.

The remainder of the script makes little second.

If you're script.Parent, you have to give it either nil or an object. You're giving it false (since workspace clearly isn't false, it's a thing, it isn't even a boolean).

You never defined disabled so setting Lol to that wouldn't make sense. Neither would simply setting Lol to anything; that doesn't change anything about what Lol use to be, so it just makes it pointless to have define Lol in the first place.

The above code, at any rate, is equivalent to this:

-- It doesn't do anything (except error)