This document discusses the differences between "how much" and "how many" when asking about quantities or amounts. "How much" is used for uncountable nouns as well as asking about prices. Examples given are "How much time?" and "How much is that car?". "How many" is only used for plural countable nouns, like "How many apples?". The document also provides examples of responding to price questions, such as "It's 20 pounds" or "The apple is 20 Mexican pesos".