A 2019 tax return can no longer be e-filed using TurboTax, it can only be printed and mailed.
Go to this IRS website for a 6 digit IP PIN - https://www.irs.gov/identity-theft-fraud-scams/retrieve-your-ip-pin
On page 2 of the Form 1040 -
For 2019, if you received an Identity Protection Personal Identification Number (IP PIN) from the IRS, enter it in the IP PIN spaces provided next to the space for your occupation. You must correctly enter all six numbers of your IP PIN. If you didn't receive an IP PIN, leave these spaces blank.
To access your current or prior year tax returns sign onto the TurboTax website with the userID you used to create the account - https://myturbotax.intuit.com/
Scroll down to the bottom of the screen and on the section Your tax returns & documents click on Show. Click on the Year and Click on Download/print return (PDF)
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.
