I filed My 2023 Taxes With Premier TurboTax on April 15 and were accepted by the IRS, 4 Days Later an email on My Junk Folder told me it had been rejected, What do I do?

If you expected a refund, you can check your status on the IRS website.

@Willl1 

If you really used "Premier" then that is the desktop software and not the "Online" software.

IF it was indeed the desktop software, re-open that tax file and then go up to the top line menu  to the "File" selection (not the File tab...the actual top line menu) and re-check your filing status from the drop-down menu.

Also, make sure it wasn't just the state that was rejected.  The IRS can accept, but the State could have rejected their part (if you filed a state).

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What exactly does the reject email say?  And who is it from?  Maybe its a fake.  Or an old email for a prior year?  

If you efiled, In the PDF of your TurboTax return, the last page of the federal return should be an "electronic postmark" that shows your name, Social Security number, the date and time that you e-filed the return, and the date that the IRS accepted it.  For Desktop  You can probably switch to Forms mode and get it.  

If your return shows Accepted then I wouldn’t worry about the email.   You can also order a Transcript from the IRS to see if they got it.  

https://www.irs.gov/Individuals/Get-Transcript