Hello @MohamdSaada214, welcome to the community!
That's great that you'd like to share your knowledge on Udemy and dedicate an English course for kindergarten students, but please note that students and instructors must be at least 18 years of age to create an account on Udemy and use the services, and you're more than welcome to create a course to teach for this audience instead. You may also use the Marketplace Insights tool to conduct thorough research on your topic's demand and competition in the platform.
If you have any doubts, feel free to read our FAQ or reach out to the Instructor Support team. 🙂