how to get to Huiyang from Zhuihai.Is there a bullet train service. How much does it cost?

Do you mean the Huiyang in Huizhou city? There is no direct rail connection between. You may take a high speed ride from zhuhai to guangzhou first which is about 1 hour and then from guangzhou to huizhou which is about 90min. The cost may around CNY170 by second class seat. There are two stations in Zhuhai, Zhuhai railway station and Zhuhai north railway station. The first one is closer to the Gongbei Pass at the Macau border. North station is a little far from the city, located at North Jinfeng road, Xiangzhou District.