I wonder if somewhere out there, someone actually did a bodycount for all the people John Wick has killed in the various movies. I checked with screen rant and got this:
A helpful look at the breakdown of the first three movies (via GeekTyrant) reveals the John Wick kill count in each movie. John Wick features 77 on-screen deaths at John's hands — a number that rose to 128 in John Wick: Chapter 2 as John made some powerful enemies. John Wick: Chapter 3 - Parabellum found John on the run with only time for 94 kills along the way. While this information shouldn't be all that surprising given the genre and plot of the movies, it is still a bit shocking to see that the protagonist single-handedly killed 128 people in one movie, making for 299 total in those first three films.
The John Wick kill count jumped even higher in John Wick: Chapter 4. In the fourth movie, John Wick killed an estimated 140 enemies in the movie all by himself. He went through several big events in this movie, and the kills just kept building at an almost unnatural level. There were some very notable John Wick kills, such as when he went back to the desert and killed The Elder at the start, wrapping up that storyline from Parabellum. He then killed several people with assistance in the fight at the Osaka Continental Hotel in Tokyo before heading to the Killa's nightclub for more carnage.