How many planets are there in each constellation in the universe?

I can't say for sure. If we must say, the number of planets in each constellation is infinite.

Constellations are artificially divided areas of the sky, and each constellation is different in size and shape. With the naked eye, there are many stars in each constellation, and some are few, but in astronomical telescopes, it is completely different.

Numerous planets and galaxies can be seen in large astronomical telescopes. In the Hubble Space Telescope, the sky with a diameter of 0.5 degrees contains hundreds of galaxies, and each galaxy contains hundreds of thousands and hundreds of billions of planets. And no matter from which direction, the number of galaxies is similar. Just because they are too far away, we can't see them with the naked eye.

So the number of planets in each starry night is infinite.

This is a picture of the starry sky taken by Hubble Space Telescope. Every bright spot is a huge galaxy, including hundreds of thousands to hundreds of billions of planets.