Change the name of the topic center in Topics
You can change the name of your topic center in the Microsoft 365 admin center. You must be a SharePoint administrator to perform these tasks.
Access topics management settings
In the Microsoft 365 admin center, click Settings, then Org settings.
On the Services tab, select Topics.
Select the Topic center tab. See the following sections for information about each setting.
Update your topic center name
To change the name of the topic center
On the Topic center tab, under Topic center name, select Edit.
On the Edit topic center name page, in the Topic center name box, type the new name for your topic center.
Select Save