jacked up my car today on rear left after releasing the jack the car seems to have stayed higher on that side why would this be

Go around to each corner of the car and bounce it up and down so the shocks will release. Car should level up if everything is good.

roll it back and it will settle'

the tires hold the suspension from settling as the geometry changes the tire position to the ground.

Release the parking brake.

You may have turned one of the rear springs so it's not sitting in the top cap properly...or roll the car back to remove the camber.

A short drive will cure it unless there is really a problem.

any chance you have upgrade to delrin suspension bushings?

this happens commonly when they need to be regreased
we used to disassemble and regrease the rear swing arms annually when we first started racing on delrin.