Warzone is currently only available for Windows users, which means that you are going to need to run Windows on Boot Camp on your Mac. To do this, you are going to need around 200 GB of free storage space. Below we have included the basic setup instructions:
Run Boot Camp Assistant on Mac. Alternatively, you could use Parallels Desktop to set up the Windows Virtual Machine.
Download Windows 10 ISO and load it into Boot Camp Assistant.
Follow the installation instructions to install Windows.
When the installation has finished, run Windows 10, connect to the internet, and download Warzone to play it like a regular Windows user.