The information provided by @tucker @Mike9241 and @ee-ea is good information.
In your last response, you asked Do you recommend we amend our 2020 federal return? Yes, you should amend your 2021 tax return. Just want to point out that your question is asking about your 2020 return. But your previous posts refer to 2021. I assume we are talking about the 2021 tax return.
if you forgot to report a W-2 on your 2021 tax return you need to amend it to add the additional W-2. NOTE: Do not amend the federal return until you have received your refund from the IRS. It is possible that the IRS will also catch the missing W-2 also and will send a letter about additional tax due or adjustment to your refund.
