How often should you listen to hypnosis for social anxiety?

It depends: You'd want to have a good evaluation of your anxiety first, to be clear about the diagnosis. You could show the doctor your recordings, to see whether s/he feels they apply to your kind of anxiety. Most hypnosis recordings suggest you listen daily, especially for the first 30 days. However, i don't know what kind of recordings you have or what specific problems you're actually experiencing.

Depends: If you are listening to the right recording, as often as you can but at least once in the evening before bedtime. If you are listening to a recording that does not resonate with you and your situation, the number of times you listen won't matter.