I got solution :
There is no such thing as DNN 6.3. It went from 6.2.x to 7.0.x... But, you don't need to install any additional modules for DNN 6.x to get Google Analytics to show up. You just need to enter your Tracking ID in Admin -> Google Analytics.
Then you can check whether it's working correctly by verifying it rendered in the HTML. Bring up your site in your browser and then view the source of the page. Then search for "UA-". If it finds it, then that should be the Google Analytics snippet. If it didn't find it, then there's something going wrong.
Keep in mind that by default Google Analytics won't show the current day's hits. You have to modify the date range to include todays date.