I can indeed describe number 1 as infinite decimals piled together. I can also describe 0 as infinite numbers getting subtracted by themselves. But that does not change the value. The value remains same. No matter if there are infinite universes in the multiverse, they are all valued the same, that is, 0.
Everything in existence has a total value of 1. Zero should not be the starting point in any equation that tries to balance all the energy within reality. 'Something from nothing' theories are nonsensical.
There can be no infinite number of multiverses according to the conservation of energy law. That law doesn't reveal how much energy exists, but it does reveal it has always been in existence, has always had a set value, and will always retain that set value, no matter how many complex interactions it has with itself.