To change your app name:

If you have not opened the project in Android Studio yet, you can change the APP_NAME option in the iosApp/Configuration/Config.xcconfig file directly in any text editor.

If you've already opened the project in Android Studio, do the following:

Close the project.

In any text editor, change the APP_NAME option in the iosApp/Configuration/Config.xcconfig file.

Re-open the project in Android Studio.

If you need to configure other settings, use Xcode: after opening the project in Android Studio, open the iosApp/iosApp.xcworkspace file in Xcode and make changes there.

See official doc: https://www.jetbrains.com/help/kotlin-multiplatform-dev/multiplatform-publish-apps.html#ios-app