Follow this step. Hope it work for you.
Step 1
Use a clean, dry paintbrush to wipe excess dust from the disk. Try placing the disk in the XBox 360 to see if it works. If it still does not work, go on to Step 2.
Step 2
Use a clean eyeglass polishing cloth to polish the disk in a vertical motion, moving from the inside of the disk to the outside. Do not polish the disk in a circular motion.
Step 3
Apply a small amount of glass cleaner to the polishing cloth. Polish in a vertical motion, moving from the inside to the outside of the disk until the disc is dry.
Step 4
Place a very small amount of car wax on the polishing cloth if you are still unable to use the disk. Polish the disk in the same vertical, outward motion. The car wax will work to fill in any small scratches that may still exist on the disk.
Step 5
Consider returning the disk to your retailer or purchasing a new copy of the game if the disk still does not work.