how to save time and money in macau tour

Personally, traveling by taxi in M is not a good idea. Many hotels or Casinos provide free shuttle buses, with which you can easily have a visit in the major attractions there. Besides, the local bus service is also convenient.

Do you want a one day trip itinerary? If so, here is my suggestion for your reference:
Grand Lisboa - Senado Square - Ruins of St. Pauls - Fortress Hill - Museu do Vinho and Fisherman Wharf - Macao Sands - A-ma Temple (if there is time left)