Please clarify if you are referring to the prior-year Self-Select PIN or the 2017 AGI? If you are in the same account as last year, the information should have transferred in automatically. No person can provide either of those to you.
The majority of people use the 2017 AGI to verify when efiling. Why are you unable to get your 2017 AGI? Was your 2017 return prepared with Online TurboTax? If so, have you located your 2017 return in that account? If not, we can help you look for another account.