core/homeassistant/components/fivem/icons.json

{
  "entity": {
    "sensor": {
      "max_players": {
        "default": "mdi:account-multiple"
      },
      "online_players": {
        "default": "mdi:account-multiple"
      },
      "resources": {
        "default": "mdi:playlist-check"
      }
    }
  }
}