Can I find out what happened with my tax return in 2017?

2017?   Why have you waited until now?   Did you file a return using TurboTax?   If so look at the account you used and see if it says the return was "accepted" or "rejected."   If it was accepted and you did not ever get your refund you will have to follow up with the IRS.   if it was rejected you can print it, sign it and mail it now, but you are too late to get the refund if you have not filed it yet.   

  You have to access your own account and/or  print it for yourself using exactly the same account and user ID that you used when you prepared the return.

https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-access-my-prior-year-return/01/27010

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

Account recovery

https://myturbotax.intuit.com/account-recovery/

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

Or did you use the desktop version of TurboTax?  If so, the files are on your own hard drive or any backup device you used like a flash drive.

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.

check the IRS website to see if there's a transcript for 2017. no transcript means they never got the return

https://www.irs.gov/individuals/get-transcript 

you can also view the status of your a/c for 2017

https://www.irs.gov/payments/view-your-tax-account