Where can I get iOS companion 2.72 or 2.72u?

Hi
I'm beginner of iOS.
Please lead me to the below question.

Where can I get iOS companion 2.72 or 2.72u?

The iOS companion Is available On the iOS's App store.
But if you don't have a iOS phone you can install IOS emulators, which most of them are only available on the MacOS, But if you are using Windows There are still some web version Of the IOS emulator. You can find it By Using google search.

내 질문은 iosbuildservertest에서 사용하는 companion version 2.72 나 2.72u 를 말합니다.

The currently available iOS version is 2.64.5. You can also beta test the next version 2.64.6 using Apple TestFlight.