So I have a client who has a website that sells clothes and accessories. My question is, can I create a web view based application with a few features like Push Notifications, other screens, and more.
Will my app get rejected if its web view based e-commerce site? Are is it a way that I can get it on the store?
This is a very general question. Apple has no restrictions on web view based application and you can implement all the required feature that you have mentioned. For an example you can use: Ionic to build your application and it's totally fine.
Though apple doesn't recommend to make an application which only renders website inside the app framework. Since you are building an actual application with features that's not a problem. For assurance, I have published application which are based on web view in the past.