Shaped Pixels on "[Theme: Longevity] Indexing"

How can I do to make a search engine index only the home page of my website and not all other pages ? When i search something on Google (for example) i want that the link shown is about the home and not other pages

You will need a Meta Tags plugin to manage what the GoogleBot (robots) index. There's some other methods, even one from your host account, but the easiest would be a plugin.

Maybe check out one of these
https://wordpress.org/plugins/tags/robotstxt