You have stated your home is in Massachusetts. Your absence from MA for work in other states is temporary and does not make you residents of those states as you intend to return home to MA. For 2020 you should file non-resident CA and non-resident VA and MA resident.
When you prepare multiple state return returns using TurboTax, prepare your non-resident state returns first. In your case, prepare your California, then Virginia and then Massachusetts last.
I have income from multiple states. Which ... - TurboTax
