Do you have one that you recommend? The two I've seen are Creed, and one whose name currently escapes me but is cheaper. The latter I have heard is a more "authentic" experience, while Creed is more of a game.
I'd say that's more of a rhythm game than a boxing game. There are a fair number of entries in that genre, beat saber is popular, supernatural is similar.
Honestly though you can just search for "best VR workout games".