I thought bout gettin it but not sure how good the coop is .

A few youtubers who got into the beta have posted some co-op missions, if you don't mind some longer videos. Or do you mean if it has local games as well as online? Because I've seen local vs matches, but dunno about co-op missions.

Either way, you can always wait until more information comes out after it's released. All you really miss out on is playable Goku Black, and they already confirmed he'll be DLC later for anyone that missed him.

I have it just haven't done much with it yet really. Still would be awesome to have more people to play with.