Matt. 27:5, "…and went and hanged himself (Judas)." Judas died. What happens at death? In the Old Testament, all people, both good and bad, go to 'sheol' (Hebrew Strong's H7592). Job prayed that he might be sent to sheol in Job14:13, "O that thou wouldest hide me in the grave (sheol)…until thy wrath be past…" In Ecc.9:5,10, Solomon tells us that sheol is a condition of unconsciousness, "the dead know not anything…" and " …there is no work, nor device, nor knowledge, nor wisdom in the grave (sheol), whither thou goest."
Will mankind stay forever in the condition of death (sheol)? No. The unconscious dead are essentially waiting for the resurrection. And Jesus taught that He, Himself, will awaken them from death. John 5:28, 29, "the hour is coming, in the which all that are in the graves shall hear his voice and come forth." Acts 24:15 "And have hope toward God, which they themselves also allow, that there shall be a resurrection of the dead, both of the just and the unjust." So, Judas is in the grave waiting for the resurrection.