Show Buddypress Xprofile Field Data After The username in The Members Directory.

yzc_add_xprofile_field_data_after_username.php

<?php

/**
 * Show Xprofile Field Data After The username in The Members Directory.
 */
function yzc_add_xprofile_field_data_after_username( $name ) {

    if ( bp_is_members_directory() ) {
        
        $field_data = xprofile_get_field_data( 'Age', bp_get_member_user_id() );

        return $name . ', <span class="bp-user-age">' . $field_data. '</span>';
    }

    return $name;

}

add_filter( 'bp_member_name', 'yzc_add_xprofile_field_data_after_username', 10 );