You have been working as an independent contractor, and as such, have to pay self-employment tax for Social Security and Medicare, and depending on whatever other income -- if any-- you received in 2020 you may also owe ordinary income tax. You do not mention if you have been collecting unemployment benefits--which are taxable income.
https://ttlc.intuit.com/questions/1901110-do-i-need-to-make-estimated-tax-payments-to-the-irs
How do I report income from self-employment?
If you received a 1099-MISC for your self-employed income
Type 1099-misc in the Search box and then select the Jump to link. This will take you directly to the section where you can enter your 1099-MISC. You’ll also be able to enter any cash, personal checks, credit card payments, or cryptocurrency (Form 1099-K) related to your self-employment.
If your self-employment income was only from cash, personal checks, credit card payments, or cryptocurrency
Type Schedule C in the Search box and then select the Jump to link. This will take you to where you can enter any cash, personal checks, credit card payments, or cryptocurrency (Form 1099-K) related to your self-employment. You may first be asked some general questions about your business. After you answer them, you’ll be taken to the Let's get income for (your line of work) screen where you can enter this income as Additional Income.
https://ttlc.intuit.com/community/self-employed/help/what-is-the-self-employment-tax/00/25922
https://ttlc.intuit.com/questions/2902389-why-am-i-paying-self-employment-tax
https://ttlc.intuit.com/questions/1901340-where-do-i-enter-schedule-c
https://ttlc.intuit.com/questions/3398950-what-self-employed-expenses-can-i-deduct
https://www.calcxml.com/calculators/self-employment-tax-calculator (non-TT site)
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
