The first easy diagnosis you can do is to put in a new roll of cheap film. Don't try to use this roll for shots you intend to keep – this is for diagnostic purposes only. See if the camera "acts" normally with the new roll: take pictures, advance the film as normally after each shot. If it seems like it takes more cranks on the advance lever until the next frame is ready to go, that might indicate the advance gears were stripped or have some sort of problem. If the film seems to advance normally, then the advance gears are probably ok.

Shoot the entire roll. At the end of the roll, rewind the film (by first pressing the rewind button before cranking). If the film rewinds entirely, then you're probably ok.

This is a simple diagnosis you can try before you determine if you need to send it in for service. If anything acts weird or differently that expected in the above steps, then you have to consider you might have damaged the camera, and you'll have to take it to a repair shop or send it in for repair in order to get a cost estimate. Good luck!