Hello,
1) The code is for initialization. Please read the documentation:
https://developers.facebook.com/docs/marketing-api/audiences-api/pixel#parameters
4) Please take a look http://prntscr.com/e8iff0
<script>
fbq('track', 'ViewContent', {
value: <?php echo WC()->cart->get_cart_subtotal(); ?>,
currency: '<?php echo get_option('woocommerce currency'); ?>'
});
</script>
5) No need.
6) Yes, it’s required.
Regards,
Eva Kemp.