How do you say worry about it in French?

The most common way to say "worry about it" in French depends on the context:

Informal:

* T'inquiète pas! (Don't worry!) - This is the most common and casual way to tell someone not to worry.

* Ne t'inquiète pas! (Don't worry!) - This is a slightly more formal version of "T'inquiète pas!".

Formal:

* Ne vous inquiétez pas! (Don't worry!) - This is the polite way to tell someone not to worry.

Other options:

* N'aie pas peur! (Don't be afraid!) - This is a more emphatic way to tell someone not to worry, but it is not as common as "Ne t'inquiète pas!".

* Ne te fais pas de soucis! (Don't worry yourself!) - This is a slightly more literary way to say "Don't worry!".

Example sentences:

* "T'inquiète pas, tout va bien aller." (Don't worry, everything will be okay.)

* "Ne vous inquiétez pas, je m'occupe de tout." (Don't worry, I'll take care of everything.)

* "Ne t'inquiète pas, je suis là pour toi." (Don't worry, I'm here for you.)

The best way to choose the right phrase depends on the context and your relationship with the person you are talking to.