If my federal tax return was rejected due to the irs accepting a duplicate submission,code R000-194, by someone else

Unless you can fix a wrong ssn you will have to print and mail it.   And let the IRS sort it out.

How to mail a return from the Online version

https://ttlc.intuit.com/community/printing/help/how-do-i-print-and-mail-my-return-in-turbotax-online/00/26258

Be sure to attach copies of your W2s and any 1099s that have withholding on them.  You have to mail federal and state in separate envelopes because they go to different places.  Get a tracking number from the post office when you mail them for proof of filing.

The return primary SSN or Taxpayer Identification Number (TIN) has already been used on a filed return with the IRS

You will have to print and mail your tax return, it cannot be e-filed

See this TurboTax support FAQ for how to print and mail a tax return using the online editions - https://ttlc.intuit.com/community/printing/help/how-do-i-print-and-mail-my-return-in-turbotax-online/00/26258