Hi there. I need t go from Beijiao, Shunde to Macau and back on the same day. What are the best way?

You can take a taxi from Beijiao to Shunde Railway Station, where there are express light rail trains to Zhuhai. You will be taken to Zhuhai Station near Gongbei border. Cross the immigration border and you will get into Macau. For the back trip, you can use the same way!