I submitted my taxes for last year on October 31, but it’s saying there’s no record of it. What do I do?

What is "it" that says there is no record?   What does it say in your online account?   Are you in the right account?  

Many people have multiple TT accounts and forget how to access them.  Log out of the account you are in now.

Account Recovery

https://ttlc.intuit.com/questions/1901535-forgot-your-turbotax-online-user-id-or-password

https://ttlc.intuit.com/questions/1901486-how-many-turbotax-accounts-do-i-have

Did you e-file?  Did you click a big orange button that said “Transmit my returns now?”

When you e-file your federal return you will receive two emails from TurboTax.  The first one will say that your return was submitted.  The second email will tell you if your federal return was accepted or rejected.  If you e-filed a state return, there will be a third email to tell you if the state accepted or rejected your state return.

First, check your e-file status to see if your return was accepted: 

https://turbotax.intuit.com/tax-tools/efile-status-lookup/

If the IRS accepted it, what does it say here?  

https://www.irs.gov/refunds         

  Or does your account say “Ready to Mail?”

Note:  If it says “Ready to Mail” or “Printed” that means YOU have to mail it yourself.  TurboTax does not mail your tax return for you.

If you realize now that your return was not e-filed successfully, then you will need to file it by mail.  E-filing is permanently closed for past year returns.  You will need to print the return, sign and date it in ink, and mail it in.

If you efiled on October 31, it was too late for TurboTax to process it and it is not filed.  You will need to print and mail the return.  Efiling ended on October 15.