Hi UnicornHeart -
This is Orlando, an Independent advisor and an expert with Windows 10. I understand you're concern about downloading application and installing on your computer as it might contain a malware which will infect your computer.
Android Studio application doesn't seem to contain any malwares as it is one of the applications being used by many users to create/develop android base applications and games. Upon doing some research about the application, some services of the application works on the background of your computer that why there are some users saying that it might contain a virus or malware.
You can find more information on this application using this link:
https://developer.android.com/studio/
(Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.)
Hope this helps, have a good day.
Thanks,
Orlando Q.
Independent Advisor