For NJ unemployment taxes, how do I fill out state taxes for YE 2020 if moved to MD and filing full time resident of MD?

Moved to MD in summer 2020. Received delayed unemployment benefits in 2020 from lost job in 2019. We moved in 2019. I sold my place in 2020 in NJ- no rental income. 

  • Do I have to file NJ form as a non resident even though full time resident of MD in 2020
  • Do I just file MD full time resident only as house sale would fall under federal as primary residence and meet cap gains thresholds?
  • How are Unemployment benefits handled- do I pay a state tax on these as read no NJ state tax on Unemployment benefits but seems like MD has one?
    • Income is $160K- filed jointly
    • Is unemployment benefits for NJ and MD taxable?
    • What about the $300 additional payments for unemployment- taxable or not?
  • Do I have to do anything for the house sale in NJ- ie fill out NJ non resident?

 

Any help is GREATLY APPRECIATED!!!