Worldwide? I am not sure as I do not intimately know the situation in all of those countries. However, if we take only china and india, they make up more than a third of the worlds population. Those countries do not have an incel problem like the west does
Although it seems to be getting more common all around the world, most men who are not from the west (europe and english speaking countries) are probably not incel. I cant see that changing for a long time, especially considering that a lot of east asian countries refuse to let in white foreigners as citizens.
Indonesia, malaysia, phillipines, bangladesh. Countries like this have so many people and they do not have the westernized lifestyle or westernized women, and they dont have white men to take away the native women. China is more modern and globalized than those countries but still does not have any foreign citizens and the lifestyle does not allow women to act like they do in the west.
With all that taken into account, most men worldwide are probably not incel