How can I file for unemployment?

You will need online Deluxe if you received unemployment compensation.  The Free Edition does not support entering the 1099G you will need to enter.

UNEMPLOYMENT COMPENSATION

Unemployment compensation is taxable on your federal return. 

You will have to enter a 1099G that is issued by your state.

Some states will mail out the 1099G.  Or you might need to go to your state’s unemployment website and use the password, etc. that you have been using to certify for weekly benefits to get your 1099G from the state’s site.

Enter your 1099G in Federal>Wages & Income>Unemployment

Go through the screens very carefully, making sure  to enter any federal/state tax you had withheld from the unemployment.

https://ttlc.intuit.com/community/entering-importing/help/where-do-i-report-a-1099-g-for-unemployment-or-paid-family-leave/00/26530

Most states with a state income tax do tax unemployment benefits

AL, CA, DC, NH, NJ, and PA  do not tax unemployment

https://ttlc.intuit.com/community/personal-income-taxes/help/how-does-receiving-unemployment-affect-my-taxes/00/1756152

https://ttlc.intuit.com/community/form-1099-g/help/what-if-the-boxes-on-my-1099-g-don-t-match-the-boxes-in-turbotax/00/1954176

https://ttlc.intuit.com/turbotax-support/en-us/help-article/unemployment-taxes/report-1099-g-unemployment-paid-family-leave/L2SvRx6ex_US_en_US?uid=lsro3owa

This isn't a topic that is covered by TurboTax, but unemployment is issued by the individual States.  

This Department of labor article may help How Do I File for Unemployment Insurance?