The Hourly rate is provided to analyse how profitable your services are.
To see the services which pay you the most per hour and those that are the least productive go on the Services screen and you can the column titled Hourly rate on each service you've added.
To organise the entire list of services to see your hourly rate, you can easily sort it to show.
You can also change to see this in list view if you prefer. It will look like this:
Once you know your hourly productivity rate (= rate per hour), you can adjust your services to be most profitable.
PROTIP: If you have a service which looks to be giving you a low hourly rate, you either need to charge more for it or deliver the service faster and in a shorter time slot.
Changing one or both of these things will increase your productivity / hourly rate so you can earn more money from it. 😊