I'm having a blast with bullet right now. I have at least 3 games just now that are 90+ accuracy. I even blundered my queen in one and still got 80 (not sure how, must have played very good after that) I lost that game, though.
Highest Accuracy on Bullet games

97.9 I have a blog on it
https://www.chess.com/blog/Thisguy120/i-just-got-my-best-accuracy-ever-in-a-50-move-bullet-game

in the past, it's possible for both sides to get 100 (but at the outside of the game's still 99.99) play a bunch (maybe 8 or more) of books move, and chess.com is weird I used Ruy Lopez mainline
remember: always book moves, even best moves can't do it (that's the weird point)

i just noticed there're upvotes and downvotes
i'm rarely in forum so this is new to me
It is new.
If you play all book moves it gives you 100 accuracy, but best moves take away like .1 which is kind of cringey.

I got 95 accuracy in blitz yesterday and I’m only 1076 !
Sorry, but shotsforfree was more impressive

Okay I reached my peak... I will never play chess again...
As a 300 rated chess player in a 16 move bullet match I got a 98.7% Accuracy game...
https://www.chess.com/analysis/game/live/82129991434?tab=review
I Should Quit
What was the highest accuracy you achieved on a 1 Minute bullet game?
https://www.chess.com/analysis/game/live/26003935823?tab=analysis
I just got 94.1 on this 14 move game and my opponent had 65.2, so it was an epic fast game!
Do you have a higher accuracy?