Drupal\\node\\Entity\\Node Object ( [in_preview] => [values:protected] => Array ( [vid] => Array ( [x-default] =
The following code will get you the term object you need.
$term = Term::load($node->get('field_destination')->target_id);
If you need the name of that term you can do the following
$name = $term->getName();
Hope this helps out!