Hi @taejooY875Z here is the link to a thread from the community:https://forums.autodesk.com/t5/bim-360-support/how-to-delete-a-project-in-the-autodesk-construction-...
The main point is that you can only archive your projects for now, they cannot be deleted.
Here is the link that explains how to archive projects: https://help.autodesk.com/view/BIM360T/ENU/?guid=GUID-A3E389A3-0EEC-4522-8875-279AC6629C07
You go to the account admin page and click on the three dots on the right and archive project.

Please let me know if that works. Thank you.
Thank you.
Prateek Chitnis
BIM Manager | AECO (Buildings)
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