You cannot delete the question but you can edit the subject line to indicate that you would like it to be deleted.
It seems I cannot edit the subject line now.
How do I change my screen name in the forum?
@jamesmac007 wrote:How do I change my screen name in the forum?
You can have a Moderator change your profile screen name. To do so, post a request in the special thread at the link below about changing screen names and a Moderator should see it and help you. It may or may not be this weekend.
https://ttlc.intuit.com/community/get-started-in-community/help/how-do-i-change-my-profile-username-on-the-forums/00/1213618