How to share best score screen to facebook for Android and Windows Phone

Hi, i had write a simple game using cocos2dx 2.2, i am already publish on Google Play.
Now I upgrade to cocos2dx 3.2 and intent to publish to Windows Phone Store too.
I would like to add a new features

  • to allow the player share their best score to the Facebook on both Android and Windows Phone.
  • to display ad-mob on Windows Phone
    Does any implement this before, could you tell me how to implement these features?