Hi I want to know how much ghanians have to have to travel to the usa... what is the declaration fee

It's a SCAM! Don't send money!

My last chance, it was the amount to buy the ticket. Change for a meal in travel would be great.

There is no requirement, the common scam is somewhere from 2000 to 10,000. It depends on how much they think you have. The passport and visa is only about 300 US dollars, there is no money in the bank requirement.