If it was not reported to you any other way, I would report it here:
Miscellaneous Income
Other reportable income
Other wages received
Other earned income*
*Turbotax says:
Report any other taxable income here. This includes wages, bonus pay, severance pay, or benefits from an employer received but not reported on a W-2. Be sure to only include amounts that are not or will not be reported on a W-2 or 1099.
