Absolutely, if the server is on the same machine it's a simple matter of changing the valheim_server.exe command in the .bat file to say -world "YourWorldNameHere".

If it's on a remote server you'll need to copy your world save across to it somehow.

Warning, world saves don't take well to having their files renamed, it tends to delete everything you've ever built. This website has an online tool for fixing that: https://geekstrom.de/valheim/fwl