I had built 2 custom post type with Toolset - Speaker Profile and Speaker Post.
Speaker Profile is the cpt for user to build their profile and display to others and speaker post is the post publish by speaker on their profile.
I will like to display the number of post published by each speaker on their profile page.
==> After that please use this Shortcode in you View or View’s loop to display child posts count, and make sure to replace child_post_type with your child post type slug, here I have used ’speaker’ in the below shortcode: