You get a W2=from an employer not a 1099. If you are self employed you might get a 1099NEC but you need to report all your income whether or not you get the 1099NEC. You need to fill out Schedule C to report it and pay the Social Security and Medicare tax that wasn't taken out.
You can fill out Schedule C and enter 1099NEC or Self Employment Income into Online Deluxe but if you have any expenses you will have to upgrade to the Premium or use any of the Desktop CD/Download programs. All the Desktop programs have the same forms, so you can buy a lower version. You just get more help and guidance in the higher versions.
How to enter income from Self Employment
https://ttlc.intuit.com/community/self-employed/help/how-do-i-report-income-from-self-employment/00/...
Did you file a tax return without it? Then you need to amend to add it.
