Once the apps are published on the Apple App Store, it can take upto 7-10 working days for your Apps to Go Live.
In general, they pass through 3 stages:
Waiting for review:
In this stage, the apps are uploaded, but the review process by the Apple staff has not started.
In this stage, the Apple staff / team has begun the review of your application and will get back to you incase they have any queries. Please note: It's a thorough test of the full app to ensure it complies with Apple Inc's policies
Ready for Sale:
Once your app is successfully reviewed by the Apps review team at Apple, they will change the status for your app to "Ready For Sale"
This entire process, takes upto 7-10 working days.
In case, its taking longer, you may get in touch with the support team at Apple or check your email, if you've received any notification
Hope this article was useful :)