Since it was rejected it never got filed. You should have got a reject email saying why.
You now have to print and mail prior year returns. When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s. Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS or State received the return. Mail federal and state in separate envelopes.
You need to register a 2019 online account to access prior years
https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-access-my-prior-year-return/01/270...
Depending on the reason it rejected you may need to fix something. How to finish a prior year online return
https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-finish-a-prior-year-return-that-i-...
