Change my account email address

I want to change my account email address, but I can’t find a way to do it. I went into my preferences, but it does not allow my to make a change there. Where do I go?

Go into your profile, go to preferences, your email address, select setting (a wrench image) and change it.

I also want to change my account email address, but I can’t find a way to go to preferences, or se a wrench image to allow me to make a change there. Where do I go? I do not see an edit tab for email change