How many universes really exist?

Many scientists think that there isnt just one univere but an infinite amount, and some think that there are actually 27 universes, but one think is sure and thats no one knows exactly how many there are.

The thoery of an infinite amount of universes is mind blowing. The thing is that scientisits think that in each universe only one insignifigant thing happened differently. Lets say that one piece of grass blows to the left because of the wind, well an other univerese the only difference is that that piece of grass moves to the right, and thats a completly different universe. So you can easily see how many there are if thats true, then there is an infinite amount of universes becuase an infinite amount of different things can happen.

The theory on 27 universes says that there is actually only 27 of them. Each one operates on a different dimension, meaning that theres a universe that actually moves in 27 different ways, and also another that only moves in one. To explain this, we live in a three dimensional world, we move forward and back, side to side, and up and down, thats three dimensions. Now the universe with four dimensions would move the same way we do and another way which scientists theorize is through time itslef. But there is also a universe that can only move in one dimension, forwad and backwards, and they would have zero thickness because the other ways wouldnt exist. So there could be 27 universes that move in 27 different dimensions.