Metacritic PC reviews so far is 2.3
68 positive
11 mixed
272 negative
https://secure.metacritic.com/game/pc/fallout-76/user-reviews
ouch.
I've found user reviews on Metacritic utterly useless for many years. With the most controversial titles - such as Fallout 76, but there have obviously been many others in the past, big or small - you get the impression that half the "reviewers" or more haven't even played the game, and in any case giving a game that isn't absolutely among the most abysmal ever made, in all or most areas from gameplay to technical, a 0 or 1 score is just silly (just as I've also seen many silly 10s for some games at the other end of the spectrum, sometimes with the same games getting plenty of 0s too) and obviously only done to tank the average score. No room whatsoever for nuance with many user "reviewers".
Personally I bought Fallout 76 without having tried the beta, simply based on how much I enjoyed 3 and 4, and previously gotten some modest enjoyment from my short stints with the survival game genre (primarily Ark and Conan Exiles).
Way too early for me to give a full informed opinion, but my first six or seven hours or so have been pretty much nothing but very enjoyable playing solo. It feels almost exactly like playing Fallout 4, in a more vibrant landscape, with some added survival mechanics (I think FO4 got a mode for that too?) and a mountain of lore - and constant quests - through well voiced holotapes, computers and notes. I might start missing human NPCs at some point, but for now it hasn't bothered me and the "empty" world has a charm of its own.
I like the combat, just like I liked it in FO4, despite it being somewhat wonky (like the entire game engine that must be hanging together by duct tape and string by now) and imprecise. Quite a rush actually after playing and loving RDR2 for several dozen hours the last few weeks (still far from finished), which for all it being one of the very finest games ever in my opinion, has quite uninspired and bland combat that has not evolved at all from RDR (which back then also had bland, snap auto aim - barely possible to aim without it, combat compared to most games).