Poor little bunny! It's hard to save rabbits because they don't fight for their lives due to being prey. His eyes are open and he looks pretty alert. So that's good. If he won't eat he won't make it so hopefully he will eat. Good luck - hoping for the best.
Put it back in the nest of you can find the nest. Then put a milk crate upside down over the nest. Mama will not abandon the baby even after you've touched it. They only eat once a day, very rich milk. Hope it's a good outcome.
The bunny did great for about a week, then it got it's head stuck in the slats of the cage and went into shock (I think) and passed this morning. It was a great learning experience for the kids about taking care of one of God's creatures. It wouldn't have ever survived in the wild, after the ear and back healed and started moving around, it couldn't move his back legs, only drag them.