Sorry I don't quite understand your requirement. The power bi account doesn't belong to any region, but the place where cloud data stored is different. You might refer to this article for more reference:
Microsoft has the Microsoft Cloud Deutschland, with special attention to abide by german privacy laws. (for example publish to web is not available)
When a Dutch (The netherlands) company does not want its Power BI reports published on the General Microsoft Cloud, because this is not an option for legal (privacy) concerns, but instead wants to publish the Microsoft Cloud Deutschland because this deemed legally obtainable. How would they go about it? Where do they signup? What setting needs to be changed etc.
In other words, Is de german powerbi service enviroment available for other european countries? Or is it only available for users in germany.