There is an issue with Vuforia 7.2.20 that will prevent you from uploading your iOS app to TestFlight. The cause of the issue is that the “Bundle Version” field of the Info.plist in the Vuforia.framework is blank. This issue can be worked around by opening the Info.plist file and adding a number value, such as “1,” to this field.
This issue will be patched soon. In the meantime, please utilize this work around. The following thread contains additional information, discussion, and screenshots about this issue: https://developer.vuforia.com/forum/unity/vuforia-7220-ios-submission
Thank you for your patience and continued interest in Vuforia,
Vuforia Engine Support