There's the general overview on copper [0], annual summaries, e.g [1] for 2022, and the more detailed "yearbook" [2] which it looks like is in the process of being updated since the last official release in 2017.
for example, [1] says this about "World Resources":
> A U.S. Geological Survey study of global copper deposits indicated that, as of 2015, identified resources contained 2.1 billion tons of copper, and undiscovered resources contained an estimated 3.5 billion tons.
Note that this article is careful not to outright say "there isn't enough copper", even if it heavily implies it. It says there aren't enough mines for future demand. And in the sense that more mines should be built in anticipation of that demand, it's correct. But the idea that a copper shortage will meaningfully delay electrification is ridiculous; even if there is a shortfall, all that will mean is that EVs will become slightly more expensive while other uses of copper move to substitutes and more mines are built. The economic incentives are too strong for anything else to happen.
[0]: https://www.usgs.gov/centers/national-minerals-information-c... [1]: https://pubs.usgs.gov/periodicals/mcs2022/mcs2022-copper.pdf [2]: https://pubs.usgs.gov/myb/vol1/2017/myb1-2017-copper.pdf