Monster Hunter Rise has sold 7.7m copies on the Switch. Capcom released MHR numbers as of Dec 31, 2021.
https://www.capcom.co.jp/ir/english/business/million.html
I would assume that Switch numbers are still around this amount and will probably stay that way until a significant sale or DLC is released.
curl-6 bet me that PS5 + X|S sales would reach 56m before year end 2023 and he was right.
My Bet With curl-6
My Threads:
Master Thread, Game of the Year/Decade
Switch Will Be #1 All Time
Zelda Will Outsell Mario (Achieved)
How Much Will MH Rise sell?
My Bet With Metallox