1. If you are tracking against a Release, you can open the Release and go to Epics tab in the Release, click the "Show resolved epics" button on the top of the grid and see all resolved epics too.
2. The same is applicable when you are tracking against a Goal. Here you will see a dropdown called Show with "ALL, Resolved only Unresolved only" options. Choose ALL or Resolved only options to see resolved epics.
3. You can also view all the epics in the system. click on the header "Pega Agile Studio" that you see on the top of the left nav menu. On click, you will see a sub menu with View option. On expanding the View menu, you will see Epics. Click here to view all epics in the system.
4. On the Dashboard (i.e. the initial home page), you could configure the "My Followed Items" widget which will list all (including Resolved) items that you are following.