modules - user interface info is not displaying after upgrading Kentico 7 to 8

If I understand you correctly, you want to show the modules on the admin interface. To do this in K8 Some info is here https://docs.kentico.com/display/K82/Using+the+Kentico+interface

1) Click the Edit dashboard icon (lower right hand side of screen).
2) Click on Add new application (plus sign tile). The application list opens.
3) Select the applications that you want to pin to the application dashboard.
4) Confirm by clicking the Edit dashboard icon again (lower right hand side of screen).

Thanks Laura, but the problem that i have is refered to the displaying of the user interfaces list in any module after the kentico upgrade (from version 7 to version 8); if you enter to Modules in admin page,click the pen icon in any module for modifying and click "user interface" option for displaying the info you must watch this list (marked with red):

But when i execute the upgrade in my proyect and trying to displaying the user interface list following the described steps, the page only displays this:

There were several bugs around modules and the UI Elements in v7 which I reported and in v8.0. A lot of this comes into play when these elements were modified in v7 (intentionally or unintentionally) and not fixed. I myself, was playing around with creating a new module and then updating an existing module when I came across this problem.

Almost every upgrade I perform from before v8 has an issue like this and the simple fix, if you have not modified the out of the box modules, is to delete them, export the modules you've deleted from a fresh install (same version and hotfix) and re-import them into your site.