There can be many reasons google analytics not getting data of your website.
But 2 reasons are main why google analytics is not showing data about your website.
- Please recheck your website’s source code is there correct google analytics code is? Open your website right click on page and view source.
- Go to your analytics check your profile is there your website with http://www.yourdomian.com/ or http://yourdomain.com/ once you have confirmed open your website and check what url is loadin is that same as you saw in analytics? with http://www. or without http://
These are the main problems why google analytics or google webmaster not getting data about your website. Because http://www.yourdomian.com is different for search engine and http://yourdomian.com is different.