Charged where? I think your confusing a website scam with firefox.

Hi tripboy728, Firefox is free. You don't even need an account to use it. If you see a charge related to Firefox, you may have been scammed by a site pretending to be Mozilla. Please use the instructions in the following page to report it: Avoid and report Mozilla tech support scams

If Fire fox is free why do i get charged ??

You need to give more information and how and what you got charged.

The Firefox web browser for Windows, macOS, or Linux or the mobile version for iOS and Android? as the web browsers is free to download, install and use from say www.mozilla.org/firefox/all/

There is the Firefox Private Network that is free for a limited amount of time each month. https://support.mozilla.org/en-US/kb/firefox-private-network-free https://support.mozilla.org/en-US/products/firefox-private-network