You cannot correct the SSN on the W-2 yourself. The employer that issued the W-2 has to correct it. That would be whatever company is listed as the employer on the W-2. They have to issue a Form W-2c, file it with the Social Security Administration, and send you a copy. But if they refuse to correct it, you can use the W-2 with the incorrect SSN when you file your tax return. However, in that case you will not get Social Security credit for the settlement pay.
This is not a "tax issue" that a tax consultant can resolve. It's an error on the W-2. You are not asking for tax advice. You are asking the issuer of the W-2 to correct the erroneous W-2 that they issued.
