where is Tools in firefox

Firefox has two menu options:

• classic menu bar (File , Edit, View...) - which has Tools
• compact two-column menu accessed with the orange "Firefox" button

To display the classic menu bar temporarily, tap the Alt key.
To switch permanently, right-click a blank area of the tab bar (or the "+" button on the tab bar) and turn on Menu Bar.

from:https://support.mozilla.org/en-US/questions/978914