I saw the incest tag on F95 zone and was wondering what incest is in the game?

There isn't a scene with a blood relative of Ryen, if that's what you've been wondering about.

F95 is rather quick to add tags in general. I didn't do the tags there myself, so I can only assume something like the relationship with a daughter and mother are the reason for it.

Spoilers

There is the futanari scene with Zaleria and Ashryn.