can i use my wireless headphones to the ipad pro ( ipad os ) ?

No. The HyperX USB adapter, required for a wireless connection to the headphones does not rely on Bluetooth. It is a proprietary RF wireless protocol. In addition these headphones are not compatible with iOS or macOS operating systems.

Finally, at this point, no one here can address, whether or not, it will be compatible with the new iPadOS that will be released later this fall. As rbrylawski has already mentioned, you will need to contact the headphone manufacturer, as they will be the one required to "make it work."

The point is we are just users here and unless another user uses these headphones, we won't know if they will work with an iPad. Reach out to the manufacturer to see if their product is supported on iPad. They are wireless, but they are apparently not Bluetooth.

You need to check with the manufacturer to see if they are compatible with iPad. Here is a link to their manuals: https://www.manualslib.com/manual/1369833/Hyperx-Hyperx-Cloud-Flight.html