Traveling to NYC for 4 days in January

Hey guys,

I’m going to travel to nyc from jan 3-7 and I need some recommendations on what to do. I’m 25yo and will be traveling with my cousins. We don’t live in the US so I want to pack as many things as possible and experience as much as I can. I think there’s no better way than to ask the locals, please give me some feedback on what I absolutely need to do and eat!!!