If you lived in PA all of 2021 and you performed no services within NY that year, your 2021 W-2 should show zero NY withholding.
From New York State tax memorandum TSB-M-02(3)I:
Full-year New York State nonresident employees who do not perform any services in
New York State:
If an employee does not perform any services in New York State for the entire tax year, the
employer is not required to report any New York State wages in the State wages, tips, etc. box on
federal Form W-2.
https://www.tax.ny.gov/pdf/memos/income/m02_3i.pdf
Your personal state income tax obligations are based on where you live and where you actually work, not on your employer's "nexus".
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
