There is a "Compute hours per month" limitation for the Visual Flow Creator .
For example, 50 Compute hours per month are including in the S size of the Visual Flow Creator .
You want to check the computer hours you've already consumed for the current month, but cannot find the information within the Visual Flow Creator iteslf.
Solution
Your "Compute hours per month" allowance and current month usage can be seen within the "Usage Transparency" application as shown on following screenshot.
If you need more compute hours, you can buy a Visual Flow Creator Upgrade in the Upgrade application. One Upgrade adds 10 Compute Hours/month to your current limit.
Notes