[@robin-w Moderator 6 years, 11 months ago]

untested, but try

$title = get_the_title() ;
$forums = bbp_get_forums_for_current_user() ;
	foreach ($forums as $forum) {
		if ($forum->post_title == $title) {
			$forum_id= $forum->ID ;
		}
	}
do_shortcode( '[bbp-single-topic id='.$forum_id.']' );