On Mac, the Android SDK gets installed at: /Users/username/Library/Android/sdk/
, therefore, you will need to run the script as sudo, as follows:
sudo sh /Users/username/Library/Android/sdk/extras/intel/Hardware_Accelerated_Execution_Manager/silent_install.sh
If all goes well, the script prints the message: "Silent installation Pass!"
Then, restart Android Studio and run your app with the desired AVD.