How do I upload my iOS IPA file (made by Delphi 11.3) to the Apple app store?
I cannot find Application Uploader and TestFlight does not seem to have this capability.
In addition to Dave Nottage's answer of using Transporter, you can also upload a build to appstoreconnect using the xcrun command line utility.
xcrun altool --upload-app --type ios --file location/to/App.ipa --username username --password app-password
It could be useful in situations in which you want to upload a build from a script or when you don't have access to the Transporter app.
For the --username flag I use my Apple ID.
For the --password flag I set up an app password at https://appleid.apple.com/account/manage and use that.