Never heard of it
Google your question. Then, Follow the instructions
log into your O365 account and click the install button
Go to and sign in with your Microsoft Account that has a license for Office 365, then click Install Office. If you don't already have an Office license, the same place will allow you to buy one.
One way is to visit the Microsoft Store: [ Microsoft.com Link ]
You need to buy it to install it.
There is other free softwares you download (open office)