Pressure marks on my gaming laptop screen, any fix?

If they're from pressure (keyboard keys touching the screen when closed, or something in the bag pressing on the lid) they sometimes fade on their own over a few days once the pressure stops. If they're still there after a week, that's usually physical damage to the layers and the only real fix is a panel swap. Don't press or rub on them to try and push them out, that can make it worse. A thin cloth between the keyboard and screen when you close it stops it happening again.