In 2021 there were two W-2s issued under my SSN. One W-2 was issued covering Jan. 1, 2021 – June 30, 2021 and the second W-2 was issued for the entire year.

[taniajarjoura]

I need to submit a 1040X through TurboTax and I do not know how

[fanfare]

TurboTax has not opened for 1040-X amend yet.

while you are waiting you can review the Instructions for Form 1040-X at IRS.gov.

don't make any changes to your tax return at this time.

@taniajarjoura 

[Opus 17]

If your dates are correct, you need to amend your 2021 return.

Turbotax online is working the 2022 season.  To amend a 2021 return that was filed using the desktop software, you can open the software and click Amend from the list of things to do.  If you filed online, I believe you log in, navigate to your 2021 return, select Amend, and follow the instructions.  (I can't find a working live link in the forum for 2021, I don't know why.)

If you really meant 2022, for the tax return you filed in 2023 (this month), the amending function will likely be turned on in mid-March.