Ive been working from home since Covid started, March 2020. I am considered work from home employees since 1/2021 due to covid. Can i get back 2020 income tax?

I live in NH and worked in MA until Covid started.  NH has no income tax.  My company has paid me all my income tax for 2021 to date since there is no return to office date.  Can i get back my 2020 income tax as well and how?