I have this weird mark across my laptop screen. Its like a tiny(scratch)with no pixels going through

Try wiping the screen with a wipe that's good for electronics. It could be that something wet was wiped on the screen and dried before you noticed.

On the other hand, it could be a pressure crack. Have you ever placed an above normal amount of pressure to a specific place on the screen? It might be cracked, not on the outside, but on the inside of the screen.