The Free online edition does not support tax data that has to be entered on any forms or schedules other than on the Form 1040.
If you are eligible you can use the TurboTax Free File Program which is free to file both a federal and state tax return. The Free File Program edition is a full featured personal tax program and on a separate website from the TurboTax online editions.
To qualify for free 2019 federal and state tax returns with the Free File Program, you'll need to meet at least one of these requirements:
See this TurboTax support FAQ on the Free File Program - https://ttlc.intuit.com/questions/1900583-what-is-the-turbotax-free-file-program
See this TurboTax support FAQ for the difference between the Free File Progam and the Free edition - https://ttlc.intuit.com/questions/2572617-what-s-the-difference-between-free-file-program-and-free-e...
And see this TurboTax support FAQ on how to switch to the TurboTax Free File Program - https://ttlc.intuit.com/questions/2026912-how-do-i-switch-to-turbotax-free-file-program
also, look up the VITA or AARP programs in your local community - there are volunteers who will do you taxes for free if you income is less than $55,000. There is no age limitation.