Can i anyone teach me or share an online guide on how to write schemas. It would really be helpful.
I guess you are asking this in context of Dynamic Component extension by @yusufcihan. If yes then have a look at the guide here . It contains both ways(guides) of creating schema, i.e. with GUI or with manual method
You can use vs code for writing schema
I have learned writing schema without any tutorial I see other schema and learned in this way if you face some error then you can ask anyone that knows writing schemas
Also have a look here