Emails is not an option field that can be made available as a field in the opportunity module so how do I make it show in the opportunity list view please
You can add a custom field for email in the Opportunities module.
But if that’s not what you want, then you probably want the email from a related module. But there is more than one… you might want the email from the associated Account, or from one of the associated Leads, or from one of the associated Contacts…
Depending on this it might get tricky to achieve what you want, you might need a bit of custom code, or a Workflow might be enough, perhaps.