How much can I do after surgery?

Depends on the surg. Depends on the surgery. You need to clear this with your doctor's office. They have your specific information and would be best suited to answer that ?. In general people can do most things in 3-4 days and lifting in the 3-4 week range but depends on sizes of incisions to give absolute specifics.
Postop activity. Activity after surgery can vary widely even with one specific procedure and surgeon. There may be technical concerns during the surgery which may make your surgeon limit your activity.