Half the gold ever mined comes from one large asteroid strike in South Africa billions of years ago. Gold is much more abundant in the Solar System than it is on the surface of the Earth. Most of it has been dragged toward the Earth’s core by molten iron.
It obviously makes sense that the interior of the earth would be heated by radioactivity, and we know that the interior is molten lava, down to some point. The core would be molten iron, yes - but also all other metals, including gold, silver, and platinum, in various quantities. It would seem inevitable that there’s more molten gold at the core than there is solid gold accessible from the surface.
But since Al Gore, expert that he is, informs us that the temperature down there is “millions of degrees,” I guess there’s no way we’ll ever see and touch it.