There are 8 planets and 5 dwarf planets.

^_^v hope I helped
Universe, not just milky way
yan nga po :3
There are 8 planets in the solar system namely Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune (Pluto are now considered as a giant asteroid and not a planet)

But how many planets are there IN THE UNIVERSE? Well, I don't have an idea. Maybe, there are millions or even billions if them.
If we are going to focus on Solar System ONLY, we have actually 9 planets including the pluto. But if you're talking about universe, there are zillions of planets out there waiting to be discover.
I agree to that.