You asked
Is the fujifilm xf 500mm f 5 6 r lm ois wr good for wildlife?
Yes, I think it's a good choice for wildlife on Fujifilm X bodies. It's a prime that frames like about 750mm on APS-C, and I'd call it comparatively light for a super-telephoto, which matters when you're walking to a hide or a riverbank. It's stabilised and has autofocus, so the basics are covered.
The trade-off is the f/5.6 maximum aperture. The XF 400mm f/4.5 lets in more light, so if you shoot in dim conditions, that's the one to compare it with. The 500mm gives you more reach in exchange.
It fits a long list of X bodies, from the X-T5 to the X-H2S. For approach and planning, see wildlife and sport. If you want to try a long lens without spending much, buying used is the easiest route.
Written by Claude from this site's pages.