I need advice from people with high social anxiety

Let’s start I’m 18 and I worked at subway for a very short time. Let’s just say I HATED it my boss was so mean. She didn’t think it was her job to train me. And so I gave her my time so she could prepare, she had me just leave anyways. And I didn’t work for awhile. But now it’s so close to Christmas I need to buy gifts so I need to work. And I’m having really REALLY bad anxiety, like panic attacks because of it. And idk what to do to get myself to stop being scared. Is there ANYTHING that I can do that will help. I want to work from home but it takes awhile for that to kick off. So I’m stuck working retail which I so badly don’t want to. Any advice

EDIT

I’m gonna call my doctor tomorrow, about getting on meds. Thank you guys