Put a small amount of leather conditioner on a rag.
Buff the area in a circular motion with the rag.
Use another rag to wipe off the excess product. If this doesn't remove or greatly improve the appearance of the scuff, the top coating of lacquer on your leather furniture is probably damaged.
Purchase a can of acrylic lacquer. This is an item your local hardware store will probably have.
Do a spot test on an inconspicuous area of your leather furniture with the spray, and allow it to dry completely to make sure it will look right.
Spray a small amount of lacquer over the scuff. Be careful not to soak the area. Allow it to dry, and repeat as needed until desired results are achieved.