Save the file to your desktop. When the file is finished downloading, extract/unzip/uncompress the file to a new folder, and then run the appropriate ‘CP210xVCPInstaller_x…exe’ for your operating system.
If you’re on Windows, you can figure out if you’re using a x64 or x86 bit operating system by going to the start menu, right clicking This PC (or My Computer), and selecting Properties.