How much would it cost to build Jeddah Tower in North America?

I would guess somewhere in the neighborhood of 6-8 billion dollars. Easily that if it's in NYC or San Francisco.

To compare, 1 World Trade Center cost 3.8 billion. 1 Vanderbilt is estimated at 3.1 billion. Central Park Tower, which is a skinny tower above a department store, is said to be a whopping 4 billion dollars. Salesforce Tower was 1.1 billion.

It would be next to impossible to build that in NY or SF, property values close to downtown are expensive, you not only have to pay for land but for how much airspace you need too. 1000 meters plus the 5-10 acres needed to construct the tower alone would be close to 1-3 billion USD. Then after that you have multiple contractors you have to deal with, and multiple permits you need to get. Overall it is next to impossible. Trump tried to build the world's tallest in Chicago a few years ago and you see how that went, his company is arguably worth anywhere from 2-5 billion USD. So to conclude, it is impossible unless you have state, and municipal support making your life as easy as possible.