I read something which mentioned fitness levels such as 7.3 and 9.2. How do you work out which fitness level you are currently at?

base it on other peoples fitness levels and if they say for example i’m a 7.3 i run a mile a day lift for an hour etc. if you do that much your a 7.3, if you do more or the same exercise but longer or more intensely you’d be put higher. if you do less you get the idea.. that would be my guess.