I got a 1099 NEC but when I entered and turbo tax calculated my tax they did not do Schedule SE for self employment tax but I owe it. How do I add that?

After you input your 1099-NEC, you must answer all of the questions after the input screen so it flows to a Schedule C (self-employment income). Once there is a Schedule C on your tax return, the self-employment tax calculation will populate.  

Please follow the steps below: 

1. Open your return.
2. Search for 1099-NEC with the magnifying glass tool at the top of the page.
3. Click on the Jump to 1099-NEC link at the top of the search results. 
4. Click Edit next to your 1099-NEC.
5. On the page titled Guess what? You can deduct expenses for the example work choose Yes, I have expenses to deduct to assign this income to a Schedule C.
6. On the page titled Self-employed 1099-NEC Income select the Schedule C you are inputting this income for. If this is a new Schedule C for this year, you can add a new business on this screen.
7. Search for Sch C with the magnifying glass tool at the top of the page.
8. Click on the Jump to Sch C link at the top of the search results. 
9. On the page titled Your 2020 self-employed work summary, you should see your 1099-NEC listed with the corresponding amount. 
10. Click review next to the income from your 1099-NEC. 
11. Follow the on-screen instructions on the following pages.