The 2020 tax return can only be printed and mailed, it cannot be e-filed.
See this TurboTax support FAQ for printing a tax return from a mobile device - https://ttlc.intuit.com/community/printing/help/how-do-i-print-my-return-in-the-mobile-app/00/27034
Print, sign, date and mail the tax return to the IRS. Include with the mailed return any forms W-2 and 1099 which have taxes withheld. Go to this IRS website for mailing addresses - https://www.irs.gov/filing/where-to-file-paper-tax-returns-with-or-without-a-payment
There are no penalties for filing a tax return after the due date if filing for a tax refund or there are no taxes owed.
