The post about a brother is over a year old, so you may not get a response.
What you hopefully did was:
1. amend your 2020 return to remove the wrong W-2.
2. amend your 2019 (or whichever) return to add the wrong W-2 to the right return.
To learn more information on how to amend your return, please see this TurboTax FAQ.
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