BuddyPress.org

1) Copy /bp-default/activity/index.php to your child theme and modify to your liking.

2) Copy /bp-default/members/single/activity.php to your child theme and modify to your liking.

3) bp_activity_date_recorded() might be what you’re looking for (available in /bp-activity/bp-activity-templatetags.php).

View and delete are not separated. Check out bp_insert_activity_meta(). You could apply a filter to it.