@LT-hungvu , From your description, it seems you want to know if you can purchase Intune only license instead of the Microsoft 365 Business Premium license. Based as I know, I didn't hear the Intune-only license purchasing. To double confirm this, you can contact our License support in the following link :
https://learn.microsoft.com/en-us/licensing/contact-us
Hope the above information can help.
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