Judas repented of his sin of betrayal here:
Matt 27
3Then Judas, which had betrayed him, when he saw that he was condemned, repented himself, and brought again the thirty pieces of silver to the chief priests and elders,
And 2 verses later, he went and killed himself.
Matthew 27:3 Then when Judas, who had betrayed Him, saw that He had been condemned, he felt remorse and returned the thirty pieces of silver to the chief priests and elders,
Matthew 27:4 saying, “I have sinned by betraying innocent blood.” But they said, “What is that to us? See to that yourself!”
Matthew 27:5 And he threw the pieces of silver into the sanctuary and departed; and he went away and hanged himself
True repentance results in fturning away from sin and to Jesus Christ.
Judas regretted what he did.
Used in Matthew 27:3
μεταμέλομαι
metamelomai; from 3326 and 3199; to regret; to change one’s mind: — change his mind(1), felt remorse(1), regret(3), regretted(1).
Used in Matthew 3:2
μετανοέω
metanoeō
Total KJV Occurrences: 34
repent, 21
Mat_3:2 (2), Mat_4:17, Mar_1:15, Mar_6:12, Luk_13:3, Luk_13:5, Luk_16:30, Luk_17:3-4 (2), Act_2:38, Act_3:19, Act_8:22, Act_17:30, Act_26:20, Rev_2:5 (2), Rev_2:16, Rev_2:21-22 (2), Rev_3:3, Rev_3:19
repented, 11
Mat_11:19-21 (3), Mat_12:41, Luk_10:13, Luk_11:32, 2Co_12:21, Rev_2:21, Rev_9:20-21 (2), Rev_16:9, Rev_16:11
repenteth, 2
Luk_15:7, Luk_15:10
Three Greek words used in the New Testament help us understand the full meaning of
repentance in the Bible. The first is the verb
metamelomai, which denotes a change of mind that produces regret or even remorse for wrongs done, but not necessarily a change of heart and action. This word is used in
Matthew 27:3 to describe the guilt Judas felt over betraying Jesus.
The second verb,
metanoeo, means “to change one’s mind and purpose, as the result of after knowledge.” This verb and its related noun,
metanoia, denote true biblical repentance, which is characterized by four elements:
1) True repentance involves a sense of awareness of one’s own guilt, sinfulness, and helplessness (
Psalm 51:4–10;
109:21–22).
2) True repentance apprehends or takes hold of God’s mercy in Jesus Christ (
Psalm 51:1;
130:4).
3) True repentance means a change of attitude and action regarding sin. Hatred of sin turns the repentant person away from his or her sin to God (
Psalm 119:128;
Job 42:5–6;
2 Corinthians 7:10).
4) True repentance results in a radical and persistent pursuit of holy living, walking with God in obedience to His commands (
2 Timothy 2:19–22;
1 Peter 1:16).
Judas did not truly repent, he "felt" guilt.
Your translation is the KJV I believe. My understanding it, is not an accurate transaltion.
KJV
Matthew 27:3 Then Judas, which had betrayed him, when he saw that he was condemned,
repented himself, and brought again the thirty pieces of silver to the chief priests and elders,
NASB
Matthew 27:3 Then when Judas, who had betrayed Him, saw that He had been condemned,
he felt remorse and returned the thirty pieces of silver to the chief priests and elders,