There are 10 rings.
Do you mean scoring rings?
There are 5 different colour rings but there are 2 rings in each colour, so there are 10 rings in total.
The two innermost rings are ten points and the next is nine points
There are two black rings next to each other on a standard archery target. The outer ring is worth three, while the inner ring is worth four.
On an NFAA indoor archery target the center, also known as the bull's eye, is worth 5 points. On a Vegas indoor target it is worth 10 points
There are five colors, each divided into two scoring zones, which adds up to ten circles; a representation of the FITA 60 cm target face is shown at the FITA website.
5 five rings for five continents
It depends on target for what: they will be different sizes for archery, rifle shooting, hand guns, heavy artillery, and so on.