Can't submit 2019 said social number was used probably because submitted 2018 in 2019 to get stimulus direct deposit

what are you trying to do?

if you are trying to claim your stimulus payment, simply filing your tax return is all you had to do.  Nothing more. 

 Check the IRS website for status of the stimulus payment and update your bank information if necessary.

  AGI is line 7 on your 2018 return and line 8B on your 2019 return.  Refund is line 21a of the 2019 tax return. and line 20a for 2018

https://www.irs.gov/coronavirus/economic-impact-payments

How did you submit 2018?  If you used the Online version to file your 2018 return you have a big problem!

Online is only for 2019.  You have to wait and see if your efile gets accepted.   If they reject it for something you can change it around to be only for 2019

But if they accept it you need to wait some more for it to fully process and you get the first refund.  Then you need to Mail in an Amended 1040X return to change it to be for 2019.

You can check your efile status here   https://turbotax.intuit.com/tax-tools/efile-status-lookup/

How to amend an Online return

https://ttlc.intuit.com/community/amending/help/how-do-i-amend-my-turbotax-online-return/00/

Amended returns can only be MAILED not efiled. 

Then if you still need to do 2018.  To do 2018 you have to buy the Desktop Download program here

https://turbotax.intuit.com/personal-taxes/past-years-products/     

Or If you have a simple return You can fill out the blank forms for free.

Here is the IRS 2018 Form 1040

https://www.irs.gov/pub/irs-prior/f1040--2018.pdf

And instructions  https://www.irs.gov/pub/irs-prior/i1040gi--2018.pdf

2018 Tax and EIC Tables https://www.irs.gov/pub/irs-prior/i1040tt--2018.pdf

IRS 2018  Schedules 1 thru 6 (only if needed)

https://www.irs.gov/pub/irs-prior/f1040s1--2018.pdf

https://www.irs.gov/pub/irs-prior/f1040s2--2018.pdf

https://www.irs.gov/pub/irs-prior/f1040s3--2018.pdf

https://www.irs.gov/pub/irs-prior/f1040s4--2018.pdf

https://www.irs.gov/pub/irs-prior/f1040s5--2018.pdf

https://www.irs.gov/pub/irs-prior/f1040s6--2018.pdf

Don’t forget your state.  And you will have to print and mail your returns.  So 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.

Did you use the non filer portion of the TurboTax or IRS stimulus payment sites to register to get a stimulus payment? If you did that, a 2019 tax return with 0 income has already been efiled and you can't efile your actual return. If that is what happened, you will have to print and mail your actual 2019 tax return to get it accepted.