Each queue keeps its own history. Open the queue and use the status tabs: Waiting shows the active queue, while Cancelled, Showed, and No show show finished entries. Use the date-range picker and search to narrow the result. How far back you can go depends on your plan.
For history across lists, open Customers from the sidebar. Filter by location, list, and date, and search by the customer's name, phone number, or email.
Open an entry to review its details, custom-field answers, notes, notification activity, and final status. The available detail depends on what the list collected at the time.
If a recent entry is missing, check the correct status tab and date range in the queue, or clear restrictive filters in Customers. History remains available in Customers even after a queue is removed.