Is it normal to have an app in Review for 6 days?
6 days in Submission Review
On average, 90% of submissions are reviewed in less than 24 hours. You’ll be notified by email if we find issues in our review or if the submission is approved. You can also check the review status of your submission in the My Apps section of App Store Connect or on the App Store Connect app for iPhone and iPad.
If you are facing extenuating circumstances, such as fixing a critical bug or releasing your app to coincide with an event, you may consider requesting an expedited review. Expedited reviews are granted on a limited basis and we cannot guarantee that every request will be expedited.