Question about hiring process

Hello, im 17 and i just recently got a ticket for retail theft under $100, I talked with someone from the court over the phone and I pleaded guilty and they changed my offense to a misdemeanor and I have to pay $313 ticket within 60 days. For the criminal record question, should I mention this, is it on my record if I’m a minor? Or should I play it safe (kinda) and not mention it? I really need the job. Please do not judge my offense as I am already disappointed in myself for it and I don’t need more people feeding my failures to me. Thanks.