I would ask them if they are going to give you a W2 or 1099NEC for it. Did you have other paid wages from them that you will get a W2 for?
We can tell you later how to report it but you better send in an Estimated payment right away. Like maybe 20% or more. And some to your state.
Here are the blank Estimates and instructions…..
http://www.irs.gov/pub/irs-pdf/f1040es.pdf
Or you can pay directly on the IRS website https://www.irs.gov/payments
Be sure to pick the right kind of payment and year.....2020 Estimate
