I doubt DUI would prevent you from working in retail. It’s not like you are looking for a drivers job.

My husband used disability services two times in his life. For college needs. They also provide tuition assistance. All he needed was to show his psychiatrist’s letter than he has Tourette’s syndrome with OCD. That’s all. They do their own evaluation as well. For example if you score low academically but want college assistance that wouldn’t work. Show them whatever physical or mental disability you have and they’ll advice you