Is Scrum Master required?
Also question is, what is the point of a scrum master?
A scrum master is the facilitator for an Agile development team; they are responsible for managing the exchange of information between team members. Scrum is a methodology that allows a team to self-organize and make changes quickly, in accordance with Agile principles.
Also question is, what a scrum master does not do?
A Scrum Master is not a Project Manager, so this person does not have expected goals for each of the team members and is not considered successful only when they have done a good job.
You can be a Scrum Master, but without any experience in Agile, you will not be effective. The training itself is two days, and does not cover most of the extreme cases you'll meet day to day. If you would like to be a good Scrum Master, be part of a team that actually is agile, and learn form its Scrum Master.