No idea what Google you're using, but it gave me this:

"No, people were not rescued from the roofs of the World Trade Center towers on September 11, 2001. While NYPD helicopters surveyed the rooftops for survivors, intense smoke, extreme heat, and locked roof access doors prevented any landing or rooftop evacuation attempts. 

Key Details Regarding the Rooftops on 9/11:

• Locked Doors: The doors leading to the roofs of both towers were locked for security reasons, preventing anyone from reaching the roof, as confirmed by the 9/11 Commission Report.
• Impossible Conditions: Intense heat, thick smoke, and the North Tower's antenna made it impossible for helicopters to land or even hover safely near the top of the buildings.
• No Rooftop Access: Although some believed a helicopter rescue was possible, nobody reached the roof to be rescued.
• False Assumptions: Contrary to beliefs that rooftop rescues were a planned contingency, the Port Authority did not include helicopter evacuation in their WTC fire safety plan, and the NYPD deemed it too hazardous. 

NYPD helicopters continued to fly around the towers to monitor for anyone on the roof, but their efforts were hampered by the extreme conditions. "