The Quran does not say Judas was crucified. If someone makes this conclusion then it is his own opinion.
Deuteronomy 24:16
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"Fathers shall not be put to death for their children, nor children for their fathers; only for his own guilt shall a man be put to death."
Jeremiah 31:29
In those days they shall no longer say, "The fathers ate unripe grapes, and the children's teeth are set on edge,"
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but through his own fault only shall anyone die: the teeth of him who eats the unripe grapes shall be set on edge.
Ezekiel 18:19
You ask: "Why is not the son charged with the guilt of his father?" Because the son has done what is right and just, and has been careful to observe all my statutes, he shall surely live.
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Only the one who sins shall die. The son shall not be charged with the guilt of his father, nor shall the father be charged with the guilt of his son. The virtuous man's virtue shall be his own, as the wicked man's wickedness shall be his own.
Read and understand what you read.
Jesus said on the cross "God oh God WHY HAVE YOU FORSAKEN ME".According to Jesus God betrayed him.
The high priest asked Jesus :"Are you the Son Of God"
Jesus replied :" YOU SAY I AM" , a clear defensive position.
Funny, on other version of the inspired story you read Jesus saying :"Yes I am"..... Umm... what exactly did he say?
Denial.