Just wanted to know if the Skull Canyon NUC is compatible with an Apple Thunderbolt display.
Once connected will it work without any additional software or drivers to be installed.
In regard to your concern, on the following link, you will be able to confirm the list of the Tested Displays with Intel® NUC Kit NUC6i7KYK:
Tested Peripherals for Intel® NUC Kit NUC6i7KYK
And as it is an Apple Display you can directly confirm with Apple.