Does nprotect gameguard has a virus in it

Depends on how you define the word virus.
nProtect Gameguard is a "malware" as defined by certain antiviruses/anti-malware since they inject codes and monitor the registry and keylog your keyboard, but only when the game is running. Certain vital configurations are hidden from normal users and thus its even classified as rootkit. But so long as a virus does not change nProtect Gameguard's properties and functions, it is safe to use and it does NOT contain a VIRUS

Definition of the word virus here is a program of destructive nature to your computer.