Heating Duct Screw Hole Stripped in Drywall...

Hi everyone...first post here from the most unskilled DIY homeowner imaginable. My wife and I are going to remodel our bathroom but I am having trouble with a heating duct. As you can see in the attached photo...the screw hole is stripped on the wall and can no longer anchor the screw for a heating duct. I plan on replacing the duct altogether but I want to problem-solve the stripped hole first. Any recommendations?(Keep in mind I am very novice so the easiest solution possible is likely the most feasible for me).

How do I fix screw hole that is stripped before replacing the duct?

Please excuse the nasty tile...everything is getting replaced!!

Thanks in advance for any ideas.

 

There is likely a space between the metal duct on the right and the stud on the left. Your screw is going into the space between them.

So you can do one of two things. Angle your screw to the left so as to hit the stud. Or, cut out a little drywall so that you can clearly see and measure the space. Then cut a wood shim that will fit tightly into that space, glue it with some wood glue, and after a few hours you should be able to put a screw straight into that shim.