To be honest, majority of ICO's about football turns out to be a scam. I am not sure why but maybe football fans are easily blinded if its related to football and they are unable to see what's on the ICO itself. You have to be careful if you are an ICO investor.
Right, most of these projects are scam. Most sport related projects are usually gambling. I do not really know how cryptocurrencies can be linked to football except for ticket sales.