What bus shall i take from Senado Square to A-ma Temple and then from the Temple to Macau Tower?

You may walk northwards from Senado Square to taks bus 10A, 11, or 21A from Kam Pek Communicty Center to the temple.
For your return trip, you can take bus no. 28B to Praia Grande/ Si Toi. After alighting, walk northwards for 150 yards to the square.
The bus fare should be around MOP$ 3 for one trip.