A 1099-NEC is used to pay an independent contractor. This might be appropriate if you bartended a wedding as a side gig, whether or not it is you usual job. However, if you worked in a bar at a fixed location according to their schedule and rules, you were probably an employee and they are paying you incorrectly (and cheating you out of taxes and benefits) by giving you a 1099 instead of paying you by regular paycheck with a W-2. There is more information here, including how to file your taxes if you think you were misclassified.
https://www.irs.gov/businesses/small-businesses-self-employed/independent-contractor-self-employed-o...
