A 6 digit Identity Protection PIN (IP PIN) is provided by the IRS after you have reported an Identity Theft using Form 14039 in a prior tax year. The IP PIN is mailed to you each year in December or January by the IRS.
Go to this IRS website for retrieving your IP PIN - https://www.irs.gov/identity-theft-fraud-scams/retrieve-your-ip-pin
To enter a 6 digit IP PIN
Or enter ip pin in the Search box located in the upper right of the program screen. Click on Jump to ip pin
NOTE: If you are unable to retrieve your IP PIN, the 2019 tax return will have to be printed and mailed.
See this TurboTax support FAQ for printing a tax return for mailing - https://ttlc.intuit.com/community/printing/help/how-do-i-print-and-mail-my-return-in-turbotax-online...
If you are referring to the verification code -
See this TurboTax support FAQ if you are having trouble receiving the verification code - https://ttlc.intuit.com/community/security/help/what-if-i-m-having-trouble-with-my-filing-verification-code/01/26499