BuddyPress.org

Are you using the default theme?

The default theme shows the profile on a separate tab when you visit the member’s page. If you want to move the view profile content onto the activity tab you can look at copying the content from members/single/profile.php into members/single/activity.php (do this in a child theme of course).

If you want something more sophisticated, take a look at the custom loop examples under Support …. Docs on this site