For Market Force, there doesn't seem to be a normal. It depends on the client to some extent. I've noticed that one fast food client reports are instantly approved - NO QC. The same for their home improvement reports. Some fast casual shops are in QC briefly and usually approved within a day. Another fast food client goes to QC and is approved within a day or 2, although sometimes they are instantly approved - NO QC. The gas shops seem to take the longest. Sometimes they are approved within a couple of days but they regularly take up to 5 days. I really don't worry about the reports sitting in QC. If there is something wrong, an email usually comes almost immediately from QC. I've noticed at the end of the month things are approved very fast. At the beginning of the month not so fast. Confusing enough for you?
Haha. No real normal. I think the answer here is to not get concerned with reports in QC. Only get concerned if you get an email from QC. And, if you get an email, stay calm. Before responding, go back AND READ THE GUIDELINES as they pertain to the QC question to be sure you understand the requirement and what they are asking. Then carefully and politely (try not to be defensive) respond. If after reading the guidelines you realize you did it wrong, say so. It may be accepted anyway. If you met the guidelines, explain in great detail how you did what you did to meet the guidelines. But. unless you get the email, no news is good news.