So a tripod system is made up of the legs and the head. The head attaches to the legs and then the optics/firearm to the head via an adapter whether integrated to the optic/firearm or aftermarket.
So you need a tripod and tripod head. Your tripod head must have a clamp for ARCA Swiss.
@gr8fuldoug works for CameralandNY and get get your squared away.
I picked up a BOG Death Grip Infinite for what I feel is a steal at 170 shipped new in box. Just make sure you get a ball head (not the inverted ball) so your controls are one handed and always on the same side in respect to the rifle.