Hello Ellen,
Sorry to hear you are having issues with your iPad, please be sure the screen is completely clean, and there is no case or cover touching the screen. Some dirt covering the display may cause touchscreen problems. Use a soft, lint-free cloth to clean the screen.
You can also attempt performing a forced restart of the iPad by doing the following.
Press and release the Volume Up button
Press and release the Volume Down button
Press and hold the Power button, keep holding the Power button until your iPad Pro resorts (until you see the Apple logo)
You could also try turning on the “Touch Accommodations” this has helped others
Tap the Settings app
Tap General
Tap Accessibility
Tap Touch Accommodations (under the Interaction section)
Turn on Touch Accommodations (do not change any other sub-options)
Lastly, be sure you have free space on the device and it is currently up to date.
Let us know how it goes.