Shopping ads can be targeted to:
Select countries, listed in Google Merchant Center and AdWords Help Centers
All countries where AdWords is available
Only countries where Google.com/shopping is available
North America only
Shopping ads are currently available in Australia, Austria, Belgium, Brazil, Canada, Czechia, Denmark, France, Germany, India, Ireland, Italy, Japan, Mexico, New Zealand, Norway, Poland, the Netherlands, Russia, Singapore, South Africa, Spain, Sweden, Switzerland, Turkey, the UK, and the US. There are a list of countries where beta version is already available also.