You do not have a link list with a handle set to order-now-top-rated-products-with-20-off, or you do and it's empty. Go ahead and create a link list called Order Now Top Rated Products with 20% Off on your Navigation page and populate that link list with links that point to collections, to see collections listed here. Make sure the link list also has a handle set to order-now-top-rated-products-with-20-off.