BuddyPress.org

hi @bigkahunaburger,

Give this a try (goes to bp-custom.php or child-theme functions.php)

function bpfr_get_user_comments_on_profile() {

// number of comments to show per page
define( 'DEFAULT_COMMENTS_PER_PAGE', 3 );

$page = (get_query_var('page')) ? get_query_var('page') : 1;

$limit = DEFAULT_COMMENTS_PER_PAGE;

$offset = ($page * $limit) - $limit;

$param = array(
	'user_id' 	=> bp_displayed_user_id(),
	'status'	=> 'approve',
	'offset'	=> $offset,
	'number'	=> $limit
);

$total_comments = get_comments(array(
	'orderby' => 'comment_date',
	'order'   => 'ASC',
	'status'  => 'approve',
	'parent'  => 0
));

$pages = ceil(count($total_comments)/DEFAULT_COMMENTS_PER_PAGE);
$comments = get_comments( $param );

$args = array(
	'base'         => @add_query_arg('page','%#%'),
	'format'       => '?page=%#%',
	'total'        => $pages,
	'current'      => $page,
	'show_all'     => false,
	'mid_size'     => 4,
	'prev_next'    => true,
	'prev_text'    => __('« backward'),
	'next_text'    => __('onward »'),
	'type'         => 'plain'
);

// Output pagination
 echo paginate_links( $args );
?>

<ul>
<?php

	foreach($comments as $comment) {

	// short version
	//echo '<li>'. ($comment->comment_content .'&nbsp;<a href="'. esc_url( get_permalink( $comment->comment_post_ID ) ) ).'">View post</a></li>';
	
	// long version
		echo '<li>'. ($comment->comment_content .'&nbsp;<a href="'. esc_url( get_permalink( $comment->comment_post_ID ) ) ).'">'. get_the_title( $comment->comment_post_ID ) .'</a> Comment: '. get_comment_date( '', $comment ) .'</li>';
	}
?>
</ul>
<?php

}
add_action ( 'my_profile_comment', 'bpfr_get_user_comments_on_profile' );

function bpfr_comment_profile_setup_nav() {
global $bp;

	$parent_slug = 'comments';
	$child_slug = 'comments_sub';	
	
	// Add nav item
	bp_core_new_nav_item( array(
	'name' => __( 'My comments' ),
	'slug' => $parent_slug,
	'screen_function' => 'bpfr_profile_comment_screen',
	'position' => 40,
	'default_subnav_slug' => $child_slug 
	) );
	
	//Add subnav item 	 
	bp_core_new_subnav_item( array( 
	'name' => __( 'My latest comments' ), // as content title
	'slug' => $child_slug, 
	'parent_url' => $bp->loggedin_user->domain . $parent_slug.'/', 
	'parent_slug' => $parent_slug, 
	'screen_function' => 'bpfr_profile_comment_screen'
	) );
}

		function bpfr_profile_comment_screen() {	
			add_action( 'bp_template_content', 'bpfr_profile_comment_screen_content' );
			bp_core_load_template( apply_filters( 'bp_core_template_plugin', 'members/single/plugins' ) );
		}

		function bpfr_profile_comment_screen_content() {
			do_action( my_profile_comment );
		}

add_action( 'bp_setup_nav', 'bpfr_comment_profile_setup_nav' );

Reference: https://codex.wordpress.org/Function_Reference/get_comments

To do the same for user’s post, see here:
https://buddypress.org/support/topic/creating-a-custom-tab-that-takes-in-the-info-from-wp-recent-posts/

@bigkahunaburger,

i completed the snippet so it comes with pagination.

Here a great tutorial about pagination.

@bigkahunaburger You’re welcome ! 😉