Instead of the game, discs have just 72MB of data and the rest must be downloaded. The disc versions of the game appear to be functionally identical to digital copies. Instead of buying the license and downloading it, you purchase a disc that ships to you with a license key.
Note that you must have at least a Windows 8 or Windows 10 64-bit operating system with at least a NVIDIA GTX 660 GPU, Intel i3-9320 CPU, 8GB RAM, and 20MB storage space available to play CoD: Mobile on your PC.