You can either print, sign, date and mail the 2021 tax return to the IRS or you can e-file the 2021 tax return.
See this TurboTax support FAQ for changing from mail to e-file - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/change-mail-e-file-turbotax-o...
If you choose to mail the tax return, see this TurboTax support FAQ for how print and mail the return - https://ttlc.intuit.com/turbotax-support/en-us/help-article/printers-printing/print-mail-return-turb...
If you have a tax refund there is no penalty for filing the tax return after the due date.
If you have taxes owed, pay the taxes as soon as possible as penalties and interest will continue to accrue until the taxes owed have been paid. The IRS will send a bill in the mail for any penalty and interest after they receive the tax payment.
