It is an excellent conductor for electronics, but that does not explain the monetary value associated with it. Gold's value comes from the properties that make it a good exchange medium between buyers and sellers (i.e. money). Gold is relatively rare. You can't just invent or find a bunch of it and instantly devalue others holdings. It is simple to test it's purity, so it can't be easily counterfeited. It is small enough that it can be carried around in exchangeable amounts. And it can be easily divided into smaller denominations.
As stated by others, the low corrosion rate of gold makes it a very important coating to maintain good electrical contact in connectors, scrap electronics is commonly stripped of the gold plating used on edge connectors and other components.
The higher priced Gold audio connectors you might have seen are not just for show, they provide a more reliable, noise free connection.
Gold doesnt oxidize except under extreme circumstances and is a very good thermal and electrical conductor.
I guess you could scrape something with it if it was in coin form, like if something was stuck onto a tabletop,
it makes a fine piece of jewelry or a great tooth filling
