You can log in to your MyVerizon account from a computer, click on "View Bill" which will bring up the most recent bill. Scroll down until you see the date range of the current bill. Click on that and the date range(s) for your most recent 18 bills will pop up. Select the one you would like to view.
If you are looking from your device, log in to the MyVerizon app, navigate to your bill and the current one will pop up. Click on "History" near the top of the screen and your most recent 18 bill will show up.