I scanned my PC with malwarebyte anti-malware and it detected some hkey_classes_roots, hkey_current_user/software(Registry keys and values). No action were taken on them.

should I click on the tab "remove selected" or "ignore" ?

which option will fix better?

Remove.

Would suggest to remove also, it would not be detected if not suspicious - also make sure that you use the update option to get the latest database