Per-player stats across all sessions. Combat numbers (deaths / damage / heals / ships sunk) come from the gs-events Lua mod once it's loaded by the next server restart.
gs-events UE4SS Lua mod is installed at ~/windrose/server-files/R5/Binaries/Win64/ue4ss/Mods/gs-events/. Restart the Windrose container so UE4SS loads it. Events appear here once players move / die / damage each other.