<<I live in STATE B now.>>
More information is needed to answer your questions.
First of all, you need to identify the two states. That's because some states have reciprocal agreements with each other, which could affect your filing requirements. Also:
Did you move from State A to State B during 2019?
Did you work in both State A and State B during 2019?
Did you perhaps live in one state all year, but work in the other?
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
