If you're just wanting to see a cursory glance of your total mileage, go to the Home page of the Web Dashboard to see the pie chart with your mileage classifications.
Step 1: Scroll down the middle of the Home page until you see the pie chart.
Step 2: Click on the calendar icon to the top right of the pie chart (still in the middle of the screen). Select the option that works best for you (Today, This Month, etc).
Step 3: The results will then populate for the dates that you selected.
Remember that this is just a general overview of your mileage, so if you have more than one business line for Work, it will show the total for all your Work categories. If you want a specific break down of your report, you will need to request a mileage report.