To count the number of loops in sequencer you need a variable and the calculation block.

Go to settings tab in the sequencer and add the variable with + button:

To change the value of the variable, use the calculation block and add formula as shown on the picture 

('NumberOfCycles' = 'NumberOfCycles' +1 ). 

To show the variable, it is possible to put the name in any of the blocks and it will be shown on top of the screen when that block is performed.