How many weapons are there?

Answer 1

Assuming you mean nuclear weapons, at the peak both the US & USSR had well over 10000 warheads each with yields averaging in the low megaton range. After START this was cut to a bit over 1/3 that number with yields averaging just below 500 KTons. Russia has more total warheads than the US and usually higher yield, because they claim their missiles are less accurate than US missiles (probably true).

If you were referring to weapons in general, there are many billions. Maybe even more than the human population of earth.

Which gets us first will always be a big debate.

Answer 2

over 500million weapons