Fixed-priced contracts stay in review until the client approves the milestone or until Upwork auto-approves it after 14 days.
Hourly contract payments stay in review until the Friday or Saturday (I don't recall which) after the time-charging week ends on Sunday.
Click the "when will I get paid" link on your reports screen for more details.
Read through the resources here:
Unless you only work with clients who have used the Upwork platform in the past, your client isn't going to know the answers to your freelancer-specific questions. The client-side view and interactions are different.
As part of operating your freelancer businesses, you need to know about all of the steps involved in using the platform. In fact, you should try to learn as much as possible about the client-side so that you can assist new clients and ensure smooth transactions.