no one but you has access to your tax file and it doesn't contain the actual W-2 just the info you entered. your choices if you need an actual copy are
to go back to your employer
get a transcript from the IRS by paying a fee and submitting form 4506-T
or request a copy from Social Security Admin for a fee
https://faq.ssa.gov/en-us/Topic/article/KA-02501
