There are 15 main stars but many more. See link
Scorpius is the constellation that is shaped as a scorpion.
This is because the stars in the sky look like the outline of a Scorpion.
A few constellations have three stars in a row. The most famous one is probably Orion the Hunter - three stars in a row make up his belt. This constellation is visible in winter in the Northern Hemisphere and the summer in the Southern Hemisphere. Another constellation with three stars in a row is Scorpius the scorpion - only instead of the three stars being horizontal, the three stars are vertical and just to the right of Antares, the Scorpion's heart.
18 is the stars of the constellation hydra
There are six stars in the Norma constellation.
There are 6 stars in the constellation Libra.
The number of stars in the constellation Hercules is debated, but most agree on 14-22 stars in the constellation.
The number of stars in any constellation is uncountable.
29 stars are in the constellation pavo!
The constellation Cygnus contains 9 major stars
a scorpion
Antares is an important star in the constellation of the Scorpion.