Go to the bold name of the Instagram account and click there - it should take you to the page with all of the photos in a grid. Click on the first one then scroll down through them. Many accounts now have a secondary account set up on their Instagram bio - that is one of the places where you can place a hot link. Sites like Campsite, Ecosia, and Linktree have a grid with the photo or name of the topic and the link to the page.