The Cloud Poodll Question is a normal Moodle plugin and can be installed in the normal way. See the installation documentation for how to install it.
After the installation, you will arrive at the plugin settings page. You can leave most of the settings as their defaults. But you must enter your Poodll API user and secret.
You can get your Poodll API user and secret from the Poodll member's area at: https://poodll.com/member
If you do not have an account yet. Please take a free trial at:
https://poodll.com/register/poodll-3-trial/
At that time be sure to also register your Moodle site URL. See here for more details: