How do I count the number of unique visitors to Pages How do I get the number of Unique visitors to the page? I need to get Unique visitors on each page or at the content level, how can I get it?
You can not with only a Drupal instance, it's an architecture issue. But you can use Matomo (former Piwik) for such needs. 

If it is a simple scenario, you could get along with setting your own visit-cookie - but you need to program a module for this. And the result will be fuzzy cause of numerous caching steps.