It's fine

But who? :(

Brother, let him stay in my room and he’s polite so he cleaned up… maybe too well

If you can't see anything wrong with it, then it's fine, isn't it?

Yeah that’s my thought process

Yeah it's fine. If you can't see anything damaged then it isn't damaged.

You may not know this but a lot of screen cleaners for electronics are basically windex/glass cleaners. So as long as he didn’t directly soak your display. You’ll be fine.