“How do you shower after elbow surgery?”

Ask for a "water patch" at the surgery center and wrap the arm with plastic wrap

Depends on what surgery. If arthroscopic, I'd let you get it wet in the shower after a couple of days. Is there a cast? More than that and it depends. If any doubt, let's keep it dry. A plastic bag taped above and below. Most pharmacies have a cast protector. This is plastic sleeve that has a rubber seal on the upper arm. $15-$20 maybe. And what I hear works well is this newer type of Saran Wrap which is crinkly and seals very to itself (don't really know what it's actually called). This would likely be my first choice.

Ask your surgeon first. Usually cover with towel & bag or cast cover to protect the incision from water.

Hop onto Amazon and you can buy a plastic cover that you can wear in the shower. Hang in there!