Just about everywhere I've been has beautiful women.
I didn't see that many women in general when I was in India though. However, many Bollywood actresses are no doubt very pleasing to the eye and many Indian women born/living in western countries are also good looking.
I wouldn't rule out any country personally if we're going just by appearances - which I wouldn't do. On that basis though, some countries have a higher proportion of "better looking" women than others. For example, despite numerous supermodels originating from Brazil I don't think it's representative of the general population - at least not based on the experience I had when I was there. Whereas, in Vietnam, especially in certain parts of the country where the average age is <30, almost every other woman you see I would consider beautiful.
Other favorites on my list (purely from physical appearances) are:
Spain
Thailand
Japan
Cuba
Tanzania
Somalia
Australia
Norway
Sweden
Russia
Holland
Israel
Iran
Egypt
Hong Kong
Singapore
Actually, I can't really make a list. I keep remembering more and more places...
If however, we were to include other aspects other than just physical appearance, then my list would be a lot shorter.