How to install Google Android image in Parallels
That's not really how this works. The Android device images are not bootable images or installers or something. They contain a packed copy of the Android OS specifically built for the targeted device as well as all required hardware drivers. No virtualisation software will find any bootable code in such a firmware file.

Also most VMMs (including Parallels) virtualise x86/x64 processors, while almost all Android devies use an ARM processor. You could try an x86 port like Android-x86 or Remix OS.