Hello Yeshwanth

When ever you create a new page in website or edit some pages from website by website editor it will update or create  Qweb template in ERP System.

Now, you want to see that where the code is been saved.

Answer is  : its just temp store that code in system but you cant find that code as a file.

You can access that code using admin user with technical rights.

You have to follow the step to see the actual code which you have added in the page.

Go To: Settings -> Technical ->User Interface -> Views 

Now you have to search by page name which you have created or modified.

From here you can edit and remove the code of page also.

Hope that this answer will help you.

Please don't hesitate to ask any question regarding this.

If you get the answer as you need then please accept the answer.

Thank You