You need to contact the Payer/Employer of that W-2 and inform them of the error. Hopefully, it was just typo and an honest mistake. However, if they also had your address on the form W-2, you may need to take additional steps to protect your identity. (see below).
What to do if you suspect tax-related Identity Theft.
https://ttlc.intuit.com/replies/3301430
