Out of 7 movies only two I would call "Great", which is the 1st one of course and the most recent Prey.
The rest fall in the range of fun popcorn flicks (Predator 2 and Predators) to downright awful (AvP:Requim and The Predator). Personal opinion of course but I don't think I'm too far away from general consensus.
I think the future is bright though! Prey being well rated and hopefully doing well on Hulu/Disney+, I hope it puts faith in the franchise for Disney to greenlight more movies. Also new comics and Titan books, we are getting more Predator then we have in a long time.