I have a cloth store that only works in my country, but It receives some traffic from other countries as well, those other countries are not useful at all, so I was thinking if there is a way to activate
Adsense based upon location in order to take advantage of those visitors.
The easiest way to do this is through Google DFP.
Setup an account there and create a house ad where you add your Adsense code. Then you can choose the geotargeting you want for the ads.