Torque is a very misused word in propeller driven aircraft. In a piston engined aircraft the engine produces power to rotate of the crankshaft. This power is normally dissipated via the propeller to the airflow and produces thrust. However, if all of the power cannot be transferred thus, it will rotate the engine, and thus the aircraft, in the opposite direction; basic Newtonian physics. Hence, with a powerful piston engined aircraft at low forward speed and high power, a rolling moment may occur; this is the basis of a torque roll in aerobatics. Also, due to torque a Spitfire needs about 1/3 to 1/2 aileron at the start of the take-off roll to maintain wings level. However, with a turboprop there is no mechanical connection between the turbine/propeller and the engine/airframe and so, neglecting friction, there can be no true torque effect in a turboprop.
However, there are rolling moments generated by the propeller in a single turboprop, partly due to the propwash giving different downwash angles at each wing root. This is what generates some the aileron requirement to maintain wings level in flight at high power and low speed, although some of it also comes from the fact that with the slip ball central there will be sideslip and thus a rolling moment due to lateral stability.
What really muddies the waters is the fact that the word "torque" is often used incorrectly as the cause for yawing moments in single propeller driven aircraft. Many of the causes of this yaw such as 'p' factor have been well described above. The moral is be very careful when using the word torque!