Coin Master is a mobile game and available for Android and iOS Mobile devices.
But, you can play Coin Master on PC using phone mirroring softwares or using android emulator player.
Emulator software provides a virtual Android OS environment in your PC. After installing the emulator on your PC, you can install and play Coin Master on your PC.
Blue Stack, Nox Player and Game Loop are some of the popular emulators.
Phone mirroring softwares:
Phone mirroring softwares allows you to mirror your phone screen to PC. In this option game is run on your mobile device and you can view game screen on PC.
ApowerMirror and LetsView are some popular screen mirroring softwares.
Above are two different ways to play Coin Master on PC. Here, the Coin Master game is mainly designed for mobile devices and it is good practice to enjoy it on mobile devices.