Does anyone know the stock 23 ZForce 800 and stock 22 ZForce 500 air filter numbers, I can't find them anyplace. Thank you

2022 looks like 0800-112000-20010
2023 maybe 0JWV-112000-6000 or 0JWV-112000-4100

The general advice given and agreed on by forum members is replace the stock filter with a Unifilter.  CFMotousaparts sells a "Unifilter Upgrade" kit for the 2023 on their site. 

I use https://alpha-sports.com/cfmoto_parts.htm as my reference.
2023 is:  0JWV-112000-6000 their cost is $47.30 plus shipping
2022 is:  0800-112000-20010 their cost is $59.13 plus shipping

As the previous poster indicated best to go with the aftermarket for the 2022.
I have alomost 1000 miles on my 2023 Zfroce 800 Trail and stock air filter is still good and I have ridden in some very dusty areas with a group.