Steps to upload iOS app to Apple Store

• In XCode project General tab, make necessary updates to Version and Build number
• Set Build Only Device to Generic iOS Device
• Run Product>Archive
• Upon successful build and archive, click 'Upload to App Store' button
• Chose proper team for the submission
• Click 'Upload' to send the app to Apple
• Wait... until you get upload completed confirmation.

New build won't be available for TestFlight right away. To check status, login to iTunes Connect. Select your app>TestFight tab. Check iOS under TESTFLIGHT BUILDS section, click 'View All Builds' like, you may see your newly updated build is still in processing.