Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello Ezgi Gültekin, Welcome to the Microsoft Community. Thanks for your support of Microsoft products, and I understand that you want to use your Office Home & Business 2016 on your Mac. Typically, you are all set to check your subscription and download and install it directly on your Mac by logging into account.microsoft.com/services.
If your subscription was purchased separately and didn't come with your device, for example, it doesn't restrict the specific device and operating system on which it can be installed, so you can install it directly on your Mac, but given that you may have used the application on other devices, you may see a message after installation that says something like “This product has been used on other devices “You will need to contact support to assist you in transferring the license.
If you are not sure about your subscription, you can share the screenshot of the above page (account.microsoft.com/services) with us and we can assist you in determining that. Best RegardsEliac.S - MSFT | Microsoft Community Support Specialist