In the state of TN if a quick claim deed is wrote 2016 and never registered the court until after the grantor passes 4 yrs later, then is it legal?

A quit claim deed does not pass title.  It states that someone quits their claim to use someone else's land, for example, an easement over a neighbor's driveway. A deed is not recorded with the court but with the county clerk.  While recording is evidence of delivery, making the deed legal, delivery can be made in other ways.