How do you say 'find' in French?

As a verb

Trouver

(for an object, time, money, place, person, a job, an answer, a solution, a difficulty etc ...)

retrouver (when you are talking about a lost object or person)

In law, it will translated by déclarer

To find someone guity, déclarer quelqu'un coupable

As a noun

Une découverte

it is a real find - c'est une vraie découverte