I have already file an extension finally got my corrected W2 and need to file but Im not sure how
Sign onto your TurboTax online account to complete and file your 2021 tax return - https://myturbotax.intuit.com/
You don't do anything different because of the extension. File your tax return the same as if you did not file an extension.
If you made a payment with the extension, make sure the payment is entered in your tax return.