Just for the sake of completeness, if you don't know whether a given machine has Bluetooth hardware, just open up Device Manager and see if a Bluetooth device is present.
Windows 10 definitely has built-in Bluetooth control and pairing capability, but as has been noted, that makes no difference if you have no Bluetooth device in your hardware configuration.
Utilities like Speccy will also show if Bluetooth services are running and the hardware is present. No hardware, no running services for Bluetooth.