No, deleted apps will not show up on Apple's Screen Time feature once they have been removed from the device. However, the data related to the use of the deleted app will still be available in the Screen Time report for the past 7 days. This means that even though the app is gone, you can still see how much time was spent on it when it was still installed on the device. It's also worth noting that any new app installed after a deleted one will reset the Screen Time statistics, so the usage time recorded for the deleted app may eventually be lost over time.