Yes, you can redirect your product to another e-commerce store when the user clicks on the Buy Now button. By redirecting your products to another store, you can list the products on your store but sold at another store. To add external link, follow the steps given below:
When you edit the code, clicking on the “Buy Now” button will redirect you to another page. To know more about redirecting product to another store, go to the helpcenter - https://help.storehippo.com/topic/store-redirection-setting