A modded save is a saved game file that has been modified to give the player an advantage or unlock certain features that wouldn't normally be available at that point in the game. This can include things like infinite ammo, maxed-out health or skills, unlocked characters or equipment, and more.
Would you like more information on Resident Evil 6 modding or save game locations?
You're looking for information on a modded save for Resident Evil 6 on the PS4, specifically a repackaged version.