Yes, since it was not reported on Form 1099-G. Please see this answer from KathrynG3.
CARES Act grant money reported to you on box 6 of Form 1099-G is money that is entered under Other Common Income as Other 1099-G Income unless it is specifically excluded from taxability as PPP or EIDL advance funds.
Otherwise, you can report this as other income on Schedule C in the COMMON INCOME section under Other self-employed income, includes 1099-K, cash, and checks.
