Are you trying to publish to Tableau Online or to your company's Tableau Server?
Tableau Online, this allows anyone to view it right? That's what I want.
Unless your company has an instance of Tableau Server on-premise, or a subscription to Tableau Online (and you have a seat), your only options are to:
1. Publish to Tableau Public after registering for a free account.
2. Give out the workbook as a packaged workbook, allowing users to open it in Tableau Reader.
Let me know if you have any questions,