While many Realme users are already testing Android 10 Beta on their devices, it looks like the Realme 5 Pro will move directly to the stable Android 10 firmware. If everything goes as planned, this should happen next month. The same will happen with the Realme X, which is supposed to receive the update this month.
https://www.notebookcheck.net/Android-10-coming-to-the-Realme-5-Pro-next-month-no-Beta-in-the-cards.454160.0.html