Depends on how powerful you want it to be.
Basically thrust has to be powerful enough to get the plane to take-off speed, or it'll stay on the ground. And then you'll want a bit more than that to get a decent climbing rate out of it.
Exactly how much it'll need in numbers is impossible to say, as it'll depend on the aircraft. A bigger aircraft will need more than a smaller aircraft. If you want high climbing rates you'll need more than if you're OK with low climbing rates.
The amount of thrust depends on the power of the engine
An aircraft needs an engine to get thrust and roll forward to gain lift.
The thrust is an airplane is provided by the engines.
Thrust drives an aircraft forward.
The engine causes thrust, it moves the aircraft.
power
Thrust is the forward motion of the airplane provided by the engines. Lift is the upward force on an airplanes wing.
Thrust is the force that provides an airplane its speed. Thrust must be brought to a certain level and maintained in order for the plane to move at a speed that is sufficient to create lift from the wings.
Lift and thrust
thrust is the force pushing the plane forward (or pulling in some cases)
An airplane accelerates due to the thrust generated by its engines. As the engines produce forward thrust, the aircraft gains speed. The thrust must overcome drag forces acting on the airplane to achieve acceleration.
it depends on the airplane's chosen engines. engines can range from a few thousand lbs of thrust to around 50,000 lbs of thrust. most commercial jets pull out around 30-45,000 lbs of thrust