It’s generally advised that you should wait until your male rabbit is neutered before trying to bond. Hormonal rabbits are unpredictable and, by default, don’t play well with other rabbits. That makes bonding attempts now a bit moot. Maybe you can build a little positive foundation if they interact nicely across the wall, but the risk of creating negative experiences (a fight) as well as injuries, in my opinion, heavily outweighs that– rabbits can hold grudges and that will make things more challenging down the road.

I would personally house them with a gap in between so he can’t get to her at all– a rabbit can do a lot of damage through just a pen wall. His hormones are going to be a big obstacle in any attempt to bond them right now. Neutered rabbits can definitely still nip during bonding (it happens often), but they are much more likely to eventually work things out in the end and become bonded. Un-neutered rabbits will be unpredictable and this is dangerous.

If you’d like a pretty ‘safe’ thing to do, you can perhaps start pre-bonding, which is swapping their litterboxes, toys, and pens so they are accustomed to each other’s scent. That being said, I don’t know if that will do anything with a hormonal though (unsure if he’d get aggressive with you or when placed in the other rabbit’s territory out of instinct), but at least they wouldn’t be able to potentially harm each other.