Effectively it is a "risk score" calculation that is based on actuarial science (similar to how insurance companies decide how much to charge you for car insurance) basically all sorts of things will go into calculating the score.
Using me as an example (I don't actually know mine and can't find it in the app) it would take the fact that I am a 45 year old female with a slightly elevated BMI but with normal range cholesterol and on no medications, non smoker, reported social drinker and then overlay things like known family history, actual experiences of using healthcare (e.g. referrals to hospital, A&E attendances, mental health referrals etc) to come up with a score. It won't tell you anything you don't already know yourself and it isn't code for there is something wrong / not wrong it is simply only a calculation.
Basically if your practice is in an area where there are higher levels of risk factors it will be aggregated up to demonstrate that. That helps the NHS to work out whether certain geographical areas are getting a fair share of funding / using the level of health services / have appropriate provision for services etc.
I'm trying not to be overly outing here but mine for example will be increased because my sister had breast cancer below the age of 40 and I am a bit overweight. But it will be reduced by the fact I haven't had any other health interventions other than screening in a number of years.
It sounds like you might be anxious about something else, unless I'm reading it wrong?