As of this time, there are no servers to play on. If you want to help and start hosting these servers, then feel free to reach out!
Shining Lore is a dead MMO from 2002; it was canceled in beta.
There was a private server hosted around 2005 in China, hosted by slodt, (Archive of the forums). They were shut down sometime around 2007.
I'm unsure how the server files were leaked then, but they were re-uploaded in 2015 on the ragezone forums, which can be found here [https://forum.ragezone.com/threads/release-shining-lore-online-server-client-tools.1059923/]
The original upload of the files has since gone down, but someone reuploaded it on the Internet Archive in 2019 (Re-upload of files)
For more info on how to host a server/setup the client, please look at the Wiki page (here).
An archive of a Gamespot page talking about Shining Lore, screenshots, an interview.(https://web.archive.org/web/20040218223251/http://www.gamespot.com/pc/rpg/shiningloreonline/index.html)