You have entered the 1099-NEC in such way that TurboTax is not treating it as self employment. With the download software that was easy to do until the most recent update.
Go back to the 1099-NEC entry point and delete the 1099-NEC. If you have download software or are using the self employment version of TT online, enter the 1099-NEC at Business Income, rather than at the 1099-NEC point.
If you have other online versions, re-enter the 1099-NEC. At the "Does one of these uncommon situations apply" screen, check "none of these apply to me". At the next screen ("Self-employed 1099-NEC income") check your "business" (the reason you got the 1099-NEC). That will make it self employment on schedule C, rather than other income on line 8 of Schedule 1.
