The screen is dead, your phone is not. So, assuming the touch is also dead... or is it just black screen? sounds odd but u need to figure it out. Id simuate power off... press side button and hold for 4 seconds then press middle screen... just above is power off, just below middle is restart.
If touch still works, one or the other will happen and your phone will vibrate and play sound when a) it restarts on its own or b) you repress side button to turn on manually.
If neither happens, no tpuch at all.
The point is if you know where ur settings button is, and you have another phone for reference, you can connect with computer on usb and access your files through file manager on pc and copy them including any backups you hopefully made.
If your touch works and you have a nother note 20 for reference, you could make a new backup, then connect to computer. Its like blind touching but possible though tedious.
Easiest, go to cell shop and place your motherboard out for copying hoping screen issue is a hardware issue not related to motherboard.
Some people set up data syncing with their computer already. You might already have access via your pc without any of the above.
Good luck
