After you file

TurboTax does not get any information from the IRS after you file your tax return.  No one at TT knows about a letter that has been sent to you by the IRS, nor does anyone at TT know what number you need.

I HAVE TO VERIFY MY IDENTITY

Sometimes the IRS chooses returns randomly to request verification of identity and sometimes there is something on the return that triggers the request.  No matter why the IRS has required you to verify your identity, you need to follow their instructions in order to receive your refund.  If you do not verify your identity you will not get your refund.

https://turbotax.intuit.com/tax-tips/security/tips-for-handling-identity-verification-requests-from-...

https://www.irs.gov/identity-theft-fraud-scams/identity-verification-for-irs-letter-recipients

To call the IRS:IRS:  800-829-1040  hours 7 AM - 7 PM local time Mon-Fri

Listen to each menu before making the selection.

First choose your language. Press 1 for English.

Then do NOT choose the first choice re: "Refund", or it will send you to an automated phone line.

Instead, press 2 for "personal income tax".

Then press 1 for "form, tax history, or payment".  

Then press 3 "for all other questions."

Then press 2 "for all other questions."  It should then transfer you to an agent.