Chosen Solution

iPad was dropped on power button, and is now pushed in to the device. How repairable is it? What is the exact part to get?

You’re covered: teardown guide and, if needed this is how to use assistive touch as a temporary fix until you get the button fixed. What part(s) to get depends on what you discover in surgery.. . If not obvious ask for more help, with pictures close-up, sharp so folks who can help you out can see what you’re talking about.