how do I add a button in each category to display all posts?

I have Create a page that lists posts by category but only shows 5 posts from each category. how do I add a button in each category to display all posts?

Here's my code for a page that lists posts by category:

$categories = get_terms( 'category', 'orderby=nameorder=ASC');

    foreach ( $categories as $category ) {

        echo 'h2 class="post-title"' . $category-name . '/h2';
        echo 'div class="post-list"';

        // WP_Query arguments
        $args = array(
            'cat'           = $category-term_id,
            'orderby'       = 'term_order',
        );

        // The Query
        $query = new WP_Query( $args );

        // The Loop
        if ( $query-have_posts() ) {
            while ( $query-have_posts() ) {
                $query-the_post();
        ?
            pa href="?php the_permalink();?"?php the_title(); ?/a/p
        ?php

            } // End while
        } // End if

        echo '/div';

        // Restore original Post Data
        wp_reset_postdata();

    } // End foreach