So happy you got your rabbit back, sorry about the smell!
Although it isn’t generally recommended there are circumstances under which rabbits will need to be bathed. This article has some really excellent detailed instructions on how to go about it: http://www.bio.miami.edu:80/hare/buttbath.html
I doubt it will solve the problem but before you start anything more complicated you could try giving him a dry bath with plain cornstarch, or maybe cornstarch mixed with a little baking soda (sodium bicarbinate). Sprinkle it on generously and brush it through and out of his fur.
Do Not use tomato juice. It was a remedy at one time but tomatoes have had the key chemical in them that helped control and remove the skunk smell bred out of them and they really don’t work now. So aside from anything else you’d be stressing the poor boy with nothing positive to show.
There is an effective mix you can make yourself, I don’t remember it off the top of my head but google will help you find it, its main ingredients are liquid dish soap and baking soda. I’d think of it as a last resort since I don’t think a detergent on a rabbit’s delicate skin is a good idea.
Please do Not give into the temptation of trying to mask or remove the scent using fragrances or essential oils. Neither will help and essential oils can be surprisingly damaging.
Sorry my advice is general, hopefully others with real experience will help. I did have a dog sprayed once (lovely, memorable), but a rabbit’s needs are more specific.
Good luck and I hope you are able to clean him up soon for both your sakes!