I think it will be damn near that record-number of perfect scores that BotW got, but there's inevitably going to be a few reviews that seem bizarrely low where the game just didn't appeal to the reviewer. It's important to note that Metacritic includes reviews that aren't intended to be objective, which is to say sometimes people who just don't care for a genre are still giving it a score that reflects their distaste for it.
Of course, I suppose it's technically possible that this game won't be a masterpiece, but the Mario team has given me little reason to doubt them :)
Anything 95+ would be amazing imo; it might seem like a given as it's a Mario game, but 3D platformers of this sort are almost extinct.