Should I even go to the interview if dairy queen calls me?

Im 31, soon to be 32. I applied for dairy queen. I applied because I live with my mom, and I feel worthless because I depend on her for a lot of things, and I need to get my shit together. I was being picky, and put off getting a job for months, but I feel like I need to apply for anything at this point. So I have pretty much zero skills. I've never used a cash register. Never cook. I barely even know how to count change. I realize this is an entry level job, and they hire teenagers, but even most teenagers know how to count change. I think I'd be completely useless. On top of that I have pretty bad social anxiety, and anxiety. If they call me for an interview, should I just ignore the call, and look for something else?

Should I even go to the interview if dairy queen calls me?
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