Rik4es Said:
"Why would I call there? I don't study there. Are You a bot? I have my student email at University I'm attending the classes. I only need to change paired university email to my apple music subscription which is a proof that I'm a student."
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First of all: No - I am not a bot. I am just an everyday Apple User like you. If all you want to do is modify the eMail address, then do so here: appleid.apple.com. If you want to use this in a new Apple Account, then note that purchases cannot be transferred between Apple Accounts. It all has to do with licensing between Apple and the studio.
So, for Direct Assistance, Contact Apple:
These are User-to-User forums. As you might suspect, no one here would have any call whatsoever in licensing, of course. So, contact Apple Support. They’ll run you through the fix.
Contact Apple Support:
Note: Phone calls are taking a bit to go through at the moment, due do lots of calls. With the Coronavirus Pandemic, many are at home at the moment, with much time on their hands to contact Apple. So, just stay on the line, and you will get through :)