iPad pro 11 2020 Something weird on screen

A forced restart may be helpful - as this will often resolve isolated or unexpected issues:

• On an iPad with a Home button: Press and hold the top button and the Home button at the same time. When the Apple logo appears, release both buttons.
• On an iPad with Face ID: Press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the top button. When the Apple logo appears, release the button.

If your iPad doesn’t turn on, or if it gets stuck during start up, see the Apple Support article If your iPhone, iPad, or iPod touch won’t turn on or is frozen.

I suggest that you seek assistance directly from Apple Support. The Contact Support link is at top-right of this page; alternatively, if the Apple Stores have reopened in your region, the technicians at the Genius Bar will be able to help.

As you’re within warranty, you shouldn’t experience any difficulty with getting the problem resolved. You will most likely be offered an in-warranty exchange.