How i get Taxonomy Term URL Path by tid and TID from Term Name in Drupal 8

For taxonomy term

$aliasManager = \Drupal::service('path_alias.manager');
$alias = $aliasManager->getAliasByPath('/taxonomy/term/'.$tidss);

 

For node 

$aliasManager = \Drupal::service('path_alias.manager');
$alias = $aliasManager->getAliasByPath('/node/'.$id);

Taxonomy term path alias in twig tpl

<a href="{{ path('entity.taxonomy_term.canonical', {'taxonomy_term': node.field_taxonomy_reference.entity.tid.value}) }}">
  <h2>{{ content.field_taxonomy_reference }}</h2>
</a>

To load a single term ID by term name and vocabulary in Drupal 8 you can use the following

$term = \Drupal::entityTypeManager()->getStorage('taxonomy_term')

  ->loadByProperties(['name' => $term_name, 'vid' => 'job_category']);

$term = reset($term);

$term_id = $term->id();