What is the meaning of Allez?

alternative spelling of allee

inflection of aller: second-person plural present indicative second-person plural imperative

second-person plural present indicative

second-person plural imperative

As an expression of encouragement; there you go, let's go, come on, that's it, attaboy, attagirl

expressing a certain agitation, positive or negative (eg. enthusiasm or excitement, or impatience, annoyance or frustration, etc.), sometimes overlapping with previous sense of encouragement; come on, go on

Source: Wiktionary