Read the rules : you MUST link in using the designated link to use the ONLINE version only ...
How do I get my TurboTax discount?
You can claim a discount of up to $20 and begin filing by following this link: http://turbotax.intuit.com/affiliate/robinh2.*
*Robinhood customers must redeem this offer at http://turbotax.intuit.com/affiliate/robinh2 to receive a discount of up to $20 for TurboTax federal products. This offer is available to Robinhood customers filing 2020 tax returns through the TurboTax Affiliate Program and cannot be combined with any other discount or offer. The offer is subject to all TurboTax offer terms and conditions and is subject to change without notice.
And FYI ... the UP TO $20 discount is off the regular price and right now the program is already discounted but if you do not file by 3/1 when the discount is removed you will need to have started and finished the return using this link only ... starting the return on the regular TT website will not get you the discount.
If you qualify AND if you wait until mid January THEN you can use one of the 10 IRS FREE FILE options to file a fed & state return for free ... but you must be patient. https://www.irs.gov/filing/free-file-do-your-federal-taxes-for-free
IRS Free File: Closed until January 2021
IRS Free File is closed for the 2020 tax season. Check back in January for Filing Season 2021 opening details.
For Filing Season 2021, you must make $72,000 or below to use IRS Free File partner offers.