The archive page is a set of posts filtered on specific criteria. It could be based on certain Date, Author, Category, Search, 404, Project categories, Shop or Tag. For Author, posts come for specific authors. For Tag, posts come for a specific Tag name and so on for Date, Category, Search, Project category, shop. Here Shop Archive-title comes for WooCommerce products.
In your WP Admin Panel, Go to Appearance >> Customize >> Template Settings >> Archive page title
From here, you can easily change the title of Archive pages. Below GIF screenshot will give you more clear understanding: