Per the New Jersey tax guide, for Tax Year 2020 and forward, If you are 21-24 years old and the only reason you did not claim a federal EITC was because of your age, you may still qualify for a NJEITC.
Please use this link for more details: NJ Division of Taxation EITC
The EITC or New Jersey Earned Income Tax Credit (NJEITC) is a benefit for working people who have low to moderate income. A tax credit means more money in your pocket. It reduces the amount of tax you owe and may also give you a refund.