Show a member's expiration date on bbPress profile page.

pmpro_expiration_date_shortcode_bbpress_profile.php

<?php
/**
 * Use this recipe in conjunction with PMPro bbPress Add On to show the expiration date on single forum user profile.
 *
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 *
 */
function my_bbp_template_before_user_profile_pmpro_expiration_date() {
	$user_id = bbp_get_user_id( 0, true, false );
	?>
	<div class="bbp-user-section">Membership expires on <?php echo do_shortcode('[pmpro_member field="membership_enddate" user_id="' . $user_id . '"]'); ?></p></div>
	<?php
}
add_action('bbp_template_before_user_profile', 'my_bbp_template_before_user_profile_pmpro_expiration_date', 15, 0);