The Apollo 11 service module is still projected to be circling the moon. And no, they don’t know where it is.
The Apollo service modules weren’t jettisoned until the command module separated for Earth re-entry, so it wouldn’t be in circling the moon, though it could be in a highly elliptical Earth-moon orbit that could wind up back at the moon at some point. (I dont recall if the service modules were supposed to burn up in the Earth reentry of not.)
The LEMs were left in lunar orbit but I thought they all rapidly decayed and were used for seismic measurements with instruments left on the surface.