iPad Pro has lines running across the screen

If the lines are present while the device is rebooting and displaying the Apple logo you’ll need to seek repair.

You can view repair pricing and initiate repairs at: https://support.apple.com/ipad/repair/service

Typically this is a hardware issue.

force restart the iPad. Are the lines present? If yes hardware if not reinstall the iOS via recovery mode and set up as new.

if you’ve dropped your iPad recovery mode won’t help this will be something you’ll have to repair.