Samsung's Galaxy Note10 and Note10+ have started receiving the final, stable update to One UI 2.0 based on Android 10 a few days ago. But those are the 4G models. When it comes to the Galaxy Note10 5G and Galaxy Note10+ 5G, the situation is a bit different, as it turns out. These handsets are still stuck on Android 9 Pie, and it looks like that won't change by the end of this year. According to a statement by a Community Manager on Samsung's Korean forums, the official Android 10 release with One UI 2.0 will only reach the 5G Note10 and Note10+ in 2020. The company apologizes for the delay...
Source: https://www.gsmarena.com/5g_galaxy_note10_and_note10_wont_receive_stable_android_10_update_this_year-news-40693.php