On your Typeset home page, click the three-dot icon on the bottom right of the desired project. The resulting dropdown menu will contain the options to Preview, Copy Link, Share, Duplicate, and Delete the project.
Note: Clicking the share element will open the open in the editor and open the share panel where you can specify sharing permissions.
When deleting a project, a panel will appear where you can select which slides you'd like to delete from the specified project. If you'd like to delete the entire project, do not select any slides and Typeset will delete the entire project.
If you are not the project's owner, the delete option will not be available.