Ответ:

  1. How many apples are there in the bowl?
  2. How much milk is there in the fridge?
  3. How many books have you got at home?
  4. How much juice is in your glass?
  5. How many pencils are in your pencil case?
  6. How much money have you got with you?

Обоснование: How many употребляется с исчисляемыми существительными во множественном числе, а How much — с неисчисляемыми существительными.