Hello,
My configuration manager looks like this. What should I change in the configuration manager?
Please change the debug configuration to the release configuration.
And choose a distribution certificate and distribution provisioning profile.
After getting an .ipa file, you could upload to the App Store through Apple's Transporter, and see select the TestFlightBuild on Apple connect portal.
Refer to Publish a .NET MAUI iOS app for App Store distribution - .NET MAUI | Microsoft Learn
Update
What happens if I choose Upload to Store instead of Save As in Visual Studio after creating the .ipa file?
In the two ways, you both can upload the ipa to AppStore. Through VS, you should create app-specific password and cannot see the detailed error messages if there are something wrong.
Is my package automatically uploaded to TestFlight or how can I get my package in TestFlight?
You could see the Best Practice part at Apple's video - https://developer.apple.com/videos/play/tech-talks/110343/ (watch the video from the fifth minute onwards)
Is Transporter only for macOS? No, you could download Transporter using the links below:
Best Regards,
Wenyan Zhang
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