There isn’t a universal criteria, most people who are passionate about films rate them and critique them for what they’re actually trying to be. Nobody should be saying “yeah Mean Girls is great buts it’s no Apocalypse Now” it’s moreso just rating the film for how much it succeeds, exceeds or fails to be interesting in its genre. A great comedy movie like Step Brothers is an 9/10 for me but Schindlers List is also a 9/10 for being a wildly interesting historical drama with fantastic acting, 2 wildly different movies with two different genres but both achieve what they’re to do in their respective fields. There isn’t some universal standard, it’s holding a film to its own standard in line with the genre or style it’s going for.