Now I see what you mean.
I just filed my tax return this morning and was never asked or required to verify a phone number.
Contact TurboTax support for this problem. They may have some type of explanation why you are seeing this requirement when it is not needed, necessary or required to file a tax return.
See this TurboTax support FAQ for contacting support - https://ttlc.intuit.com/turbotax-support/en-us/help-article/account-management/turbotax-phone-number...
Support can also be reached by messaging them on these pages https://www.facebook.com/turbotax/ and https://twitter.com/TeamTurboTax
