@mafig that is per person, the Vibe is available under the entertainment section of the app or on the website. If it is available then you would be able to book it through there. If it says unavailable to book then it is sold out.
I haven’t found a way to see if the Vibe passes are available before you book a cruise though, unless you asked someone in the roll call for that sailing to check for you or called NCL to ask.