does anybody knows how to remove an socket out of an spark plug hole?

If it's a spark plug socket and it's wedged in there I would spray area with some wd 40 and use ratchet extention to try and wiggle it free. If it's another size socket or just plug socket loose in the hole an extention magnet might get it out for you.

Its a short wall socket, i use that just to see if that's the right size and it accidentally fall. It's pretty deep in there. No long nose pliers, no car.

Magnet if it's not really stuck

I Invented a tool to remove socket from spark plug tube if you want to know more ask