The soul level meta is an average player level decided by the Dark souls community. If you want to co-op and/or pvp with randoms this will be very useful. If you want to play with friends you can add a password and that will make it for that a level 50 can play with a level 500, but the level 500 will be downgraded to the level 50 stats. See the PvP Builds page for discussion on the current average meta level and some hotspots for pvp. Note that any discussions regarding these levels and areas are not to be considered official Fextralife community declarations.