Hi there!
Please check the permission of SP Page Builder from the global configuration to see if it is set not allowed to edit features for public user group. Here is a related thread:
https://archive.joomshaper.com/forums/remove-edit-page-button-from-helix-ultimate
If your permission is all good then you can try the following:
Following custom CSS code you have to use inside module "HD-Custom CSS" published on "debug" position.
You need two variants of that module.
First set for all users (users group) with
#sp-page-builder .sp-pagebuilder-page-edit {display:none;}
And 2nd module set for Super Users group only
#sp-page-builder .sp-pagebuilder-page-edit {display:block !important;}
Hope this helps anyways!