The Role Scoper plugin was first released in 2010, but after a decade it is now officially retired.
All the features you saw in the Role Scoper are now available in the PublishPress Permissions plugin.
We've built an automatic update script that will help you move from Role Scoper. If you're using Role Scoper, you will see a banner that encourages you to start the migration process:
The migration script will analyze your site and show you what features can be migrated: