State tax filing

-Between Jan - July 2020, i was working for a WA company.
-I just started a new job with a company based in CA in AUGUST 2020   
-I still live in WA and plan to stay here in WA through end of DEC 2020 and possibly moving to CA in Jan 2021

My CA employer is garnering CA taxes on my paycheck.   Will I have to file a CA return in April 2021?   And what are the chances that I will get those $ back considering I don't live in CA and make use of any services there.

Thanks