How do you say I understand a little bit of French in french?

There are a few ways to say "I understand a little bit of French" in French, depending on the level of understanding and the desired formality:

Formal:

* Je comprends un peu le français. (This is the most direct and literal translation)

* J'ai des notions de français. (This means "I have notions of French" and is more formal)

Informal:

* Je comprends un peu le français. (This still works, but sounds less formal)

* Je parle un peu français. (This means "I speak a little French" and implies some ability to communicate)

* Je suis en train d'apprendre le français. (This means "I am learning French" and implies that you are still learning)

You can also use the phrase "J'ai quelques notions de français" (I have some notions of French) which is a good compromise between the formal and informal options.

Remember, the best way to say it depends on the context and your relationship with the person you are talking to.