I no longer have an account....How do I return my receiver

No need to return it now if it has been several years later. You were likely already charged the non-return fee for the receiver.

Thanks for your reply.... so can I sell it? Or give it to Goodwill?

I don't need it and I don't want to throw it away.

Goodwill won't want it and it's of no use to another DirecTV customer. Take it to an electronics recycler. 

@mk56 

What is the receiver model of the box? I may be able to get it off your hands and salvage the parts if you don’t want to throw it out.