Count user pageviews

[Iwooo]

Welcome, how can I count user pageviews? I need it for facebook ads (pixel). 

Event looks like this on my friends wordpress blog:

fbq('trackCustom', 'PageViewCounter', {Counter: '{{Cookie - pageviewCount}}'});

What should I insert in this custom parameter? Here are some insights about facebook pixel events -  https://developers.facebook.com/docs/ads-for-websites/pixel-events/v2.11#events

Thanks for help!