Is the Pencil setup for drawing/writing only in the Settings app, under Apple Pencil settings?
iPads, for the foreseeable future, will continue to use iPadOS and NOT macOS.
This is the direction Applei is pursuing for all of its mobile devices and tablet devices.
iPadOS may get more macOS-like functionality, in the future, but this is only speculation and speculation about future Apple plans, products and software is prohibited here,per the User Agreement Terms of Use we all agree to when we all first sign up into these communities.
If you are NOT happy with your new Apple iPad Pro, if purchased from Apple, you have a 14 day, unconditional to return policy, from Apple, it for a full refund.