Yes, Whatfix enables you to bulk add Tags up to 100 content items at a time.
Here’s a GIF that shows how you can add multiple tags to content:

Note:
You cannot bulk tag content in the Production stage. Move the items to the Ready or Draft stage, tag them, and then publish them to Production.
Ensure that you push the content to Production to make the changes live.
For more information on adding tags, see Add Page Tags and Role Tags to content.