how much discount还是how many discout 还是how many discouts

what's the discount?
How much is the discount?

Discount是可数的。英文从不说how much discount or how many discounts,用法是10% discount,或discount at 10%

而且，也不说discount of something,而是用discountfor ...

比如，问一本书的折价，就问：What's the discount for the book?

最简单的答案也是最口语的答案：比如你要问这个碗有多少折扣？

英文：
what's the discount of this bowl？

问题有点复杂，问下我们的外教！明天给你回答，呵呵！

discount不可数，所以应该是how much discount！