Hi,
When you install RegistrationMagic, default pages are created automatically inside WordPress page manager. These pages, when accessed from front end once the user has logged in, display user specific information. This includes:
1. Fields you have marked in your forms to be displayed on user page.
2. User form submissions and any notes your have attached to the submissions downloadable as PDF
3. Any Payment information and status.
Apart from this you have option to create login page using shortcode or add widget with OTP system for users who are not registered on you site but have filled out a form. OTP creates a pseudo-login where users can access their details without having an account on your site.
None of this information is user editable although user can re-submit a form or fill out a new one.
I hope this helps. Let me know if you have any other questions.