Hi Eric,
Thank you for the question.
I believe you don’t need that snippet in BuddyBoss.

If you enable follow in BuddyBoss, They should add the menu in your members directory.

Please check.

Regards
Brajesh

Hi Eric,
Thank you.

Please put this code in your bp-custom.php

function bp_custom_add_member_follower_scope_filter( $qs, $object ) {
	// not on the members object? stop now!
	if ( 'members' !== $object ) {
		return $qs;
	}

	// members directory
	if ( ! bp_is_user() && bp_is_members_directory() ) {
		$qs_args = bp_parse_args( $qs );
		// check if members scope is follower before manipulating.
		if ( isset( $qs_args['scope'] ) && 'follower' === $qs_args['scope'] ) {
			$qs .= '&include=' . bp_get_follower_ids(
					array(
						'user_id' => bp_loggedin_user_id(),
					)
				);
		}
	}

	return $qs;
}

add_filter( 'bp_ajax_querystring', 'bp_custom_add_member_follower_scope_filter', 30, 2 );

/**
 * Add a "Following (X)" tab to the members directory.
 *
 * This is so the logged-in user can filter the members directory to only
 * users that the current user is following.
 *
 * @uses bp_follow_total_follow_counts() Get the following/followers counts for a user.
 */
function bp_custom_follower_add_following_tab() {

	if ( ! is_user_logged_in() ) {
		return;
	}

    // BuggyBoss has some messed up code, so this won't work.
	$count = bb_get_followers_count( get_current_user_id() );

	if ( empty( $count ) ) {
		// return;
	}

    $count = 0 ;// Ask BuddyBoss, not me.

	?>

    <li id="members-follower">
        <a href="#"><?php printf( __( 'Followers<span>%d</span>', 'buddypress-followers' ), esc_html( $count ) ) ?></a>
    </li>

	<?php
}

add_action( 'bp_members_directory_member_types', 'bp_custom_follower_add_following_tab' );

It won’t show you the count initially as there is a bug in BuddyBoss, but clicking the tab will update the count and show the followers.

Regards
Brajesh

Hi Eric,
You are welcome. I am happy it worked partially.

The problem lies with

bb_get_followers_count() 

function. The function does not return follower count and seems to be named badly. Can you please ask them to provide us with a function that returns the actual count.

Regards
Brajesh