S secure is not available for note 10.

[Shuja]

I hope this feature will be added in future updates.

[karandriems]

yes, but its only available for mid-range device.

[Ehsank]

i don't think it will be added you have to use secure folder or have to download 3rd party app lock

and You can also send feedback to Samsung by using get help section
GetHelp>>SendFeedback>>ErrorReport/AskQuestion>choose appropriate section

[VirendraPatel]

Note Series & S Series Samsung does not offer any app for expensive phones, Offers only in Mid-Range phones, Application should be made for samsung note series and s series