On the Level Palace website, there's a Leaderboards section that displays yours and other people's XP and other rankings such as levels, rates and friends.
Leaderboards are a supposed to be a fun way to compete for XP, but don't offer any special benefits if you're on any position on the list.
There's 2 leaderboards total: XP leaderboards and Level leaderboards, both categorized into Past Week, Past Month and All Time.
The link to the Leaderboards is