Link to store??

Hi all,

I am setting up a blog on WordPress.org with my own domain name (www.reelsportstees.com – Godaddy is hosting). I just signed up for a store with Bigcommerce and have it under my subdomain with Godaddy (www.store.reelsportstees.com). I would like to create a menu item on my WordPress blog for “store” and have it redirect to the subdomain that is hosting my BigCommerce site so that the store pops up, How do I do this? Is it called mapping?

Thanks,
Lisa

PS I spent MANY hours trying to set up a shop tab on WordPress but could not get my products displaying in the way I wanted w/o custom coding (which was beyond my skillset). I love the blog features of WordPress but decided to go to a dummy-proof storefront and link the two.