I recently received a W2 in the mail for a job I forgot I had for additional income, I electronically filled my taxes already and then 2 :days later recieved another W2 since the IRS has not accepted

You'll need to wait a while before you will know what you will need to do.  Here's why:

If you already efiled a 2020 return, there is nothing you can do until you find out if the IRS either accepts or rejects the efiled return. Unfortunately, due to late tax law changes the IRS will not even open up to start processing until February 12, 2021, except for a few returns they pull early for testing purposes. In the meantime the return will sit on TurboTax servers with a "pending" status and cannot be retrieved to correct (you can check the status at your Tax Home.)  So unless yours is one of the very few returns pulled early by the IRS, you won't know anything until February 12 or soon thereafter.

If your efiled return was incomplete, you would be lucky if the IRS rejects your efiled return. If they reject it, then you can simply correct everything, add the additional information, and resubmit it. If they accept it, however, then then only way to correct it is through a formal amended return Form 1040X.

So in the meantime do NOT make any changes in your return until you find out if it's accepted or rejected by the IRS.  If it's accepted, you can prepare an amended return, but the amending process has to start out with the return exactly as it was when originally filed.