Hello Professor,
Welcome to the forum.
As you know, mid-1943 it was decided that the XP-72 had more potential than the XP-47J. Because of this, only one of the two XP-47Js ordered was completed. In Dec 1944, it was handed over to the AAF at Wright Field. I would imagine (but do not know) that it was scrapped after the war, along with many other neat and interesting aircraft.
It is interesting (to me) that examples of the strange aircraft, like the XP-54, XP-55, and XP-56, all survived. Yet, examples of those aircraft that could have been a success if things were a bit different, like the XP-72, XF8B, and XA-38, were all scrapped.