Hello, so I am doing another plugin request but the plugin is called KillPrefix, It's a really good plugin for a pvp map and it shows you for example:
when you kill someone next to your name it'll show you how many kills you have got and it's a very great plugin and it works on all versions because I have tested it out before and the link is here: https://www.spigotmc.org/resources/kills-prefix.19869/ and it works with a plugin with PerWorldPlugins so you can make it work in 1 or 2 worlds, thank you if you add this plugin 