You can't find anything because it was a scam coin perpetuated by Maduro to circumvent the US led embargo. And the reported like $300m or more investment? It was fake, not even Russia investment on it (as previously reported). So if you find people to invest, then advise them not to, because most likely they will just lose their funds.
The truth is well away from there, nobody can trust the signal of a dictator, also with all the problems that Venezuela has, that talking about Petro would not make sense, nevertheless, it is necessary that you know that the petro is a scam, not has and will never have a future. The only people who speak of Petro well are the people who are with Maduro, and the truth is, they do not know very well themselves, it is a total disaster.