Not Tom. Not Bruce. Not Sly. Not even Arny.

Milla Jovovich tops list of most on-screen* kills of all time.

https://www.digitalspy.com/movies/a865596/most-deadly-actors-list-milla-jovovice-resident-evil-arnold-schwarzenegger/

All hail the Queen.

Note: Yeah, Josh Brolin's Thanos annihilated half the universe...but all those deaths were not on-screen.