Business & farm

Hi, I received a signing bonus from my recruiter in 2020, which was reported on 1099-NEC (no tax withheld).  The amount is in box 1 and all other boxes including "state income" box are blank.  None of the scenarios described on the program for this payment seems to apply (not from a farm or sporadic activity or should have been included on W-2).  Does this mean I need to create a Schedule C "business" and  file Schedule SE even though I don't have a new business?  Also, would I report this as 100% NY source income because the recruiter and my new employer are in NY (even though state income box is blank)?