How to upload your app via Application Loader on iTunes Connect?

Upload your app from Application Loader

On your Mac computer, open the Application Loader, if you don’t have Application Loader,, you can download it from Build, under Prepare for Submission section
Enter your Apple ID and Password
Click Next
Click Deliver Your App
Select the app you would like to Submit and click Open
Click Next
Wait for the application loader to upload your file. Once your file is uploaded, you will see a green check (this implies that your app has been submitted to Apple).
Note: You only need to click Send if you receive an error message and want to re-add your application
You have successfully added your application to the App Store, click Done