The number on a bodyfat measurement is only useful for tracking direction of progress, it can’t tell you where you are.
If calipers say 15% today, and 12% in 3 months, great, right direction, but calipers saying 15% today DOES NOT mean you are 15% today.
Some tests are more consistent that others, calipers are probably the best every-day measurement tool, bodyscans or full submersion tests are arguably more accurate, but still not perfect and obviously more expensive / less convenient. Scales that use height and weight are garbage.
That said, I would ask why you want to know what the number is? If a test says your bodyfat is 8%, but you look fat, do you suddenly look good because 8%? Conversely if you look awesome and a test says 20%? You get my point.
The number, for its own sake, is meaningless.
Use the mirror to track ‘getting in better shape’, use calipers infrequently (but consistently), along with tape measure to put down markers to track progress.
Measuring your waist, chest, arms, thighs etc along with your weight is a reasonable way to track progress if you want to be more meticulous than just using the mirror.