If universe is finite, then the number of things must also be finite, and this number must thus be either odd or even.
However, as set theory (ie, Cantor) has shown, the number of odd numbers must be the same as the number of even numbers, ie, countably infinite, meaning that the number of the number of things also must be countably infinite, and thus that universe is actually not just finite, but also countably infinite.
This fact may appear confusing to many of us, but is actually extremely interesting, since it means that we can’t pinpoint (empirically) the things of universe, but can just imagine such a pinpointing, even if universe indeed is finite, ie, that the things of universe is not practically but only theoretically finite, at the same time as they are (theoretically) countably infinite. The interesting property of this fact is that it means that universe must be both cubic and cylindrical at the same time, and thus that the locations of the things of this universe must be ambiguous by having two different coordinate specifications in two different coordinate systems (ie, one cubic and one circular). This property is interesting in that it allocates probability distributions to relations between cubic and cylindrical coordinate systems, although the actual position of the things in these two systems theoretically may be unambiguous (although it practically can’t be).
The answer to the question: how many things are there in universe? is thus that we can’t find out, even if universe is finite, because this number is ambiguous between finiteness and countable infinity. Every single thing is actually ambiguous between finiteness and and countable infinity, which we traditionally call continuity. In the same way, we can never find the answers to any of our existential (ie, realistic) questions, but can just find the reasons for why we can’t find the answers. This is the destiny for secularity. If we don’t like this answer, we ought to indulge religion, as cladistics and particle physics do. But, science as a religion (as for cladistics and particle physocs) is not a good idea. We can never make things come true.