Cristiano Ronaldo can't win this much money in any of the big teams in Europe. That's why he should think about this excellent offer that came to him. In my opinion, he is currently focused on the world cup and is not responding to offers. The deal can be discussed after the World Cup is over. If Al Nassr can bring it, he will gain a great reputation in the world.
To be fair nobody in the world could earn this much money in any club on the world. This money is a serious one that needs to be not mulled over, it's money that you need to accept right away without even thinking about it twice.
I had a friend who worked there on a construction and said if I was Ronaldo I would reject it because it's really hard to live there and Ronaldo already has money, someone like us could accept it because it's a lot, but he should pick USA and less money instead of living there for 2.5 years, would be very difficult. But I do not think that 500 million would be not a lot even for him, it's a lot even for Ronaldo and he should accept.