Disabling text field for all users / roles is there an easy way to disable (readonly) fields in the backend for ALL users and roles (also superadmin).

I already found a module -> https://www.drupal.org/project/disable_field but this module allows superadmins to edit the fields.

Why do i need this?

Because the 5star rating module isn't ported to D8 yet i need a solution to realize a 5star voting in D8 with the vote data (5star rating) from an old drupal installation. 

My thought was to work with a field collection, where i want to import the main 5star rating values from the old site into the new installation.

Afterwards i want to build a custom 5star voting. 

The users should not be able to change this values in the field collection. 

Any ideas?

Regards

M.
I don't know why would you need to disable any fields in the first place (that's not turns out from your post), but if you need 5 voting field, you could easily create it:

You may need just a part of them or all of them:

Creating a custom Field