Do I have to file a schedule C if I get an 1099-NEC?

I get paid a small stipend for some work i do with a local school. I do it personally and not through any kind of business I've started. While going through Smart Check, TT asked me about "qual business income - yes/no/no entry" on Schedule C. Must I include schedule C? If so, what determines whether I choose Yes / No or no entry for this question?  Thanks so much!