The first time I know this coin, is it very powerful? Is it worth long-term investment?
Welcome!
It's not a coin, it's a token.
This is important because it's not crypto-currency but a crypto token that is part of a software platform that runs on the block chain. A VERI token is a key for accessing the platform.
Well if it's powerful and worth a long-term investment you really have to find out for yourself if you planning to buy them.
If you ask me, I think it's extremely powerful, Reggie himself says it is not an investment. But if you want to see it as an investment that's up to you, you are buying a token that is going to be VERI valuable in the future.