I'm not sure but I'll have an answer for you next Monday.
Two. Ant-Man and Wasp are the only ones small enough to fit inside a lightbulb.
Two. One to change it and another one to change it back again.
Two. One to hold the ladder and one to screw your mother - I mean light bulb!
One, although it's probably screwed in too tight anyway.
Answers below please.
The Pope!
He doesn't have a job.
It was Friday only a few hours ago...