Does your business or organization host events? Do you use your website to promote it? Do you want more attendees? If your answer to these questions is yes, the Event Schema Markup could help you out with that.
Structured data may not be a direct ranking factor but it does help search engines better understand the context of websites. It is especially helpful in Google. By properly marking up your Events pages with Event Schema, you’re helping Google understand your pages better and in return get more traffic through Rich Results.