These steps are for Installing Microsoft Office 365 ProPlus on a Windows Computer. Then you can follow these given steps to install office 365.
1. You can go to https://stores.office.com/myaccount/ in a web browser.
2. Log in to the Microsoft Store with your email address or password.
3. Then, Click Install
4. Click the setup file.
5. Click Run in the popup.
6. Click to Next
7. And click Sign In
8. Sign in with the email address and password associated with your Microsoft account.
If you need any additional information on how to install Microsoft Office 365 on your PC. you may visit here. Office.com.