How do you say in French how many countries speak French?

There are a few ways to say "how many countries speak French" in French, depending on the nuance you want to convey:

Formal:

* Combien de pays parlent français ? (This is the most literal translation.)

* Quel est le nombre de pays francophones ? (This emphasizes the number of countries.)

Informal:

* Dans combien de pays on parle français ? (This is a more conversational way of asking.)

* Y a combien de pays qui parlent français ? (This is even more informal.)

You can also use the term pays francophones (French-speaking countries) in your question:

* Combien y a-t-il de pays francophones ? (How many French-speaking countries are there?)

Remember to adjust the verb conjugation based on the context and the pronoun you use.