WandaVision

This is a whole season summation of deaths per episode

Episode 1: 0

Episode 2: 0

Episode 3: 0

Episode 4: 0

Episode 5: 0

Episode 6: 0

Episode 7: 0

Episode 8: Agatha kills 7 witches and her mom in a flashback

Episode 9: The created Vision and Wanda’s children cease to exist. It is debatable whether these count as kills as their existence is uncertain.

 

Total: 7-10