how much is macau to shenzhen to hongkong

For the ferry from Macau to Shekou, the fare is around 190RMB per adult for economical seats.
For the second trip, you mean rom Macao to HK? If so, the fare is around 147 to 184HKD for economical seats if you reach China Hong Kong Ferry Terminal and it is around 148 to 184HKD for economical seats. For this trip's exact price, you are suggested to search for more information on the official website of Turbojet.