Function Reference/get category link
src: https://codex.wordpress.org/Function_Reference/get_category_link<?php
<?php
// Get the ID of a given category
$category_id = get_cat_ID( 'Category Name' );
// Get the URL of this category
$category_link = get_category_link( $category_id );
?>
<!-- Print a link to this category -->
<a href="<?php echo esc_url( $category_link ); ?>" title="Category Name">Category Name</a>