There are many synonyms for the phrase "how much" that you can use to convey the same meaning. Some of the synonyms include "what amount," "what quantity," "how many," "what number," and "how large." When communicating with others, it is important to choose the right synonym that fits your sentence well and is appropriate for the context. For example, "what amount" is commonly used in financial contexts, while "how large" is used when discussing the size of items. You can also use adjectives like "considerable" or "substantial" to describe the quantity of something. Using synonyms will help add diversity to your language and make your messages more understandable.