Taxes

I posted here last week about not filing 2017 and 2018. People gave me great guidance. So thank you. 2017 was fine but 2018 I owe the state of NJ 1024. Has anyone owed that much money? H and r block said I did not have to send the check in today but the state will be looking for their money ASAP. She said they will send a letter

Anyone have advice?