In Zephyr scale - How to add 'Enhancements' and 'Questions' as 2 options under Bug Type

This sound like a Jira question.  I assume you want to categorise (Jira) Issues as Enhancements or Questions.  You would need to speak to your Jira Administrator to make that change to the relevant screens.

If this is a question for Zephyr Scale, can you please explain in more detail what you need?