Hi @Anshika_anshu00, you are free to choose the topic you wish to teach on Udemy. Please refer to our restricted topic list, however, for details on the topics that we do not accept.
No approval is needed to get started. You can start creating your course via this link. Please note, in order to create paid courses, you'll need an active PayPal or Payoneer account.
In order to ensure that students have great learning experiences, we also have a Quality Review Process that every course goes through. For more information on this please click here.
Hope this helps!
Abbie Reyes
Udemy Community Team
