Expose the user form into a page
Not exactly sure what you want here. But i think i understood that you have 3 profile types defined in profile2 and want to expose these to anonymous users, so that they can sign up?

If this is indeed the case, then i would reccomend you to take a look at the profile2 registration path module

https://www.drupal.org/project/profile2_regpath

This module allows you to setup a direct menu path to a user registration form that shows the profile types you select