Avoid lifting and handling your rabbit for several days except to check their sutures. They will be feeling some discomfort and will not be their usual self. Spend lots of time petting, comforting and letting your rabbit know that you understand their discomfort. Some vets use glue or stitches that melt into the flesh and don't require removal. If your vet uses traditional stitches, be sure to keep your appointment for having them removed.
Every rabbit is different.
Some come home from surgery and romp about like nothing has happened. Others take a few days before they feel like moving about. Their hormones will begin to dissipate within 2-6 weeks. If your rabbit does not eat or drink within 24 hours, consult your veterinarian immediately. This is a potentially life-threatening situation.