I am developing a app with the help of shopify remix and Polaris. But i am stuck in how to connect my app with the store front i.e. I want show something on product listing page with the help of my app but i dont know how to connect with the store front. please help me out.
There's a couple of options you can use for this. One of the easiest ways to display custom content on a product page might be to use a theme app extension which allows your app to include a component (called an app block) on a specific page, that merchants can interact with via the theme editor. This doc on getting started with theme app extensions will be helpful.
Alternatively you could work with app proxies to fetch and display data on a merchant's store from an external source.
I'd recommend checking out the docs linked and if you have more questions, let us know!