Краткое пояснение: Используем "how much" с неисчисляемыми существительными, а "how many" - с исчисляемыми.
- How many racquets are in the bag?
- Not many.
- How many extra players do we need?
- Not many.
- How many cricket bats are there?
- Not many.
- How much milk do you drink every day?
- Not much.
Ответ: How many, How many, How many, How much