Who? You! This all about you! You are the product in this interaction. Entities pay (and are paid) to share information about you. This is uniquely about you.
What? In the USA, the score range is from a low of 300 to a high of 850. The score is a shorthand method to determine the risk in loaning you assets (money, property, etc.).
When? For as long as you are an adult and alive.
Where? In the entire world. You are the product (well your data is) and data is accessible everywhere.
Why? Quick way to determine if you are safe enough (to loan money or property to, to hire, to insure, etc.).
…and I should care? Yes. High credit scores mean “Yes” to things (buy that house! lease that apartment! get that new car! You are hired for this job!, etc.) and a low enough one means “No” is the answer. Do you [...]