How to transfer over 1.5 BTC?

Sorry for bad spacing i am in mobile.

Recently my driving instructor talked to me about investments and he said he made a huge mistake a few years ago. I dont know what he did but he showed me his account and it had 1.7 BTC equivalent to over 100k in EUR. I asked him why he does not do anything with it. He said “its stuck and i keep getting calls of scammers, i dont trust them at all”. He clearly does not care. I asked him, why not try to make a new bitcoin account and transfer a small sum on to the new one to see if you could withdraw the money. He said “I dont trust these bitcoin websites at all, there is no one to trust.” I honestly feel bad for him but anyway to show him that he can withdraw the money to his account without me having acces to a single penny? I have about .7 mbtc my self in an electrum wallet. Worth about 40 bucks. Maybe i can show him an example?

Long story short.

Man i know has over 100k in btc. Does not know how to withdraw it and barely trusts anyone with it. Nor does he trust any exchange websites. I want to show him how to withdraw it without me having acces to any of his funds.