The S20 series have the opportunity to download the beta of Android 11 with ONE UI 3 only in some parts of the world and with very limited numbers I think it will be available for everyone in 2021
hey userTokDrIP9sZ, be sure to pay attention to the Offical Samsung newsroom page for all major software updates/announcements when they happen.
You to your settings and go to Software Update. You should see three options. Tap on "Download updates manually" I have a Galaxy J3 Prime 2017. It's still running Android 7.0 I'm pretty sure the same settings apply to a Note 10.