Follow these steps to install Microsoft 365 on your computer:
Go to Office.com/myaccount and Sign in using your Microsoft email or phone number
Then type in your password and select Sign in
You should then see the Microsoft 365 setup file download, normally it’s called ‘Setup.Def.en-US_O365’ to start with and then either the product type plus a lot of random characters.
Once downloaded, run the downloaded file to setup and complete the installation
NOTE: Normally the installation takes 10-30 mins depending on your internet speed