You can use WP_Query Methods and Properties to accomplish this. $wp_query->found_posts will return the amount of posts within the term while $wp_query->queried_object->name will return the name of the term currently displayed.
You can now just paste all these together to display
18 free resources
$taxcount = $wp_query->found_posts;
$taxname = $wp_query->queried_object->name;
printf(__( '%s %s resources' ), $taxcount, $taxname);
Modify as you wish to get the desired output and styling.
Note, this code should be added to your taxonomy template or archive template, depending on which template is been used to display the terms on