You should report all income you earned from you ridesharing business from the start of the quarter to the end of the quarter.  

The income you report is the gross income, before any tolls and before your rideshare operator takes there fee.

Quarter start and end dates are below:

Start                          End
1st January               31st March
1st April                     30 June
1st July                      30 September
1st October               31st December