How can I make money if I upload an app in mozilla like we do in google chrome?

Hi everyone,

Please excuse the rather provocative title. I’d like to know how I can help increase Mozilla’s income in my daily web use. Am I right thinking that Mozilla earns revenue for every time a search engine receives a query from the search bar? So which search engine should I use to maximise that? FYI I’m in France in case that affects it.

Any other ways?