It entirely depends on where in Queens to where in Manhattan. To drive from one end of the 59th St bridge to the other takes about two minutes if there s no traffic. But driving or the subway from Flushing or Jamaica to the north end of Manhattan could take an hour.
It depends what part of queens your in and what part of manhattan you want to go. manhattan and queens are very big boroughs.If your in jamaica perhaps an hour by train. maybe by car alittle longer or about the same time. Like i said it all depends on where your located.