Entertaining, but still quite broken.
For all its flaws, Fallout 76 is still an entertaining game to play. If you're looking for a very atmospheric setting without too much in the way of story, and interactions with a mostly welcoming and helpful community I would tentatively recommend Fallout 76.
However, you must keep in mind this game is far from a complete product. The servers do not have the best instability, so you will encounter disconnects. Some days it may not happen at all, whilst others it may happen repeatedly. There are numerous glitches with the game, such as enemies not having their textures loaded in, and a rather notorious duplication glitch which has seemingly been patched. Enemy scaling can also become an issue, as they scale to the highest level in an area, which may result in lower leveled characters being locked out of areas if someone of a particularly higher level is there.
Overall, the game is great to sit down and play as a solo experience, and if you can get a group of friends its as fun as anything else. Bethesda is working hard to fix the issues the game has, and it has noticably improved since release.