You do, of course, realize that the Monastery is not a game, right? It's a site where people - monks, as it were - congregate to discuss all things Perl, to get Perl-related news, to chat with others of a Perlish persuasion, and (above all) ask questions, receive and provide answers. XP and levels are merely there to reward those who provide quality content.
And that, in a nutshell, is precisely how you gain XP and level up: post good stuff - useful answers, good questions -, and you'll soon advance through the ranks.
(And just for the record, spamming the Monastery with below-par content wouldn't help you much; you won't get as many upvotes, and in fact you may get downvotes, which can make you lose XP, too.)