This is Ren from the Shopify support team, hoping to help you out here.
Are you looking for someone to help you run the store or do you want to sell it completely?
If you're looking for a co-owner, try posting on our Community Forum for Ecommerce jobs here.
If you're looking to sell the store, we have a secure Marketplace here where you can list your store to sell. Let me know if that's what you were looking for!
Right on, great work on the website. You can learn more about using the Exchange marketplace with this link. Make sure to review the following requirements:
If you're interested in learning more about what the Buyer's perspective is, check out this blog post. Is this something you plan to do again? Any thoughts or concerns after completing the initial store?