best pet battle server?

[Moelock]

I was wondering if there is any specific sever that players go on to pet battle?

[Gromagrim]

From your question I think you're asking where people go to PvP battle, if so, then I think most people just use the random queue feature in game, as it pools you with players from other servers anyway.

If your'e asking for tips on servers to catch wild pets, then I believe Earthen Ring (Europe) and Venture Co (North America) are popular.