I’ve seen a couple of schools (HS for Language and Diplomacy and HS of Fashion Industries) mention they’ll be at a Manhattan high school fair next weekend: https://www.eventbrite.com/e/manhattan-borough-high-school-fair-tickets-1014739191237

This is NOT a DOE event. It’s not mentioned on the MySchools event calendar. I can’t find a list of schools who will be attending. But, it’s happening. 

Having said that, there are no official high school fairs anymore. Those stopped with Covid. Manhattan performing arts schools have done a zoom presentation the past couple of seasons but I haven’t heard about anything for this year yet.