Solved in this way:
<?php $term_list = wp_get_post_terms($post->ID, 'term_name', array("fields" => "all")); ?>
<strong>Term name</strong> <?php echo $term_list[0]->name ; ?>
If you want to display a term in a if statement:
<?php if( get_terms('term_name') ): ?>
<?php $term_list = wp_get_post_terms($post->ID, 'term_name', array("fields" => "all")); ?>
<p><strong>Term name</strong> <?php echo $term_list[0]->name ; ?></p>
<?php endif; ?>