See the following link for adult literacy / GED volunteering. If you have an fluency in spanish (or maybe eastern european languages) that would be a plus too as many of the people that need help speak those languages, but it is definitely not required. https://www.jclibrary.org/resources/literacy-program/#Volunteers

The library have a college readiness program as well but I don't know if they take volunteers or how that works. Someone else said it, but the issue is many kids come from families that never had anyone go to college. This means no one in their lives even knows how to apply, how to select schools, what steps need to be taken (what are SATs, SAT vs ACT, when to take then, where to take them, how to apply, how to have money to apply, etc).

If you call the library I'm sure they can talk out what opportunities are available.

The parks have their own associations and neighborhood groups you should reach out directly to them. https://www.fvvp.org/ or https://www.hpnajc.org/ for example.

For soup kitchen / shelter work the two I know of are st lucy's and the sharing place.

If you like animals there are a bunch of rescue groups in the area that need fosters for dogs / cats. If you don't want them in your home they actually often also need volunteers to help escort animals to the vet (if you don't have a car they will pay for your uber, they need the person more than the vehicle many times) or to house-sit when the foster is away for the weekend, or to just walk the animals during the day when people are at work, etc etc.