First of all - Android Studio and Visual Studio are IDE's. Tools to create code. What you are asking is programming framework. I assume that when you are talking about Android Studio you mean Native Android Development and by Visual Studio you mean Xamarin.

If you want to create crossplatform app then Native Android Development is NOT a way to go. Xamarin might work for you, BUT - you'd rather recommend you to go with Flutter. It's much more performant than Xamarin, programming model is friendlier for developer and technology seems just more refined. It's also officially supported by google, so no worries about support.