1994 Nissan Sentra won't start

Pull the coil wire from the distributor ground it to the engine and have helper crank engine over-do you have spark? If its there and not on the sparkplug wire end-replace cap and rotor-

Check for battery voltage at coil 2 pin connector at green and yellow-voltage present test the power transistor not there backtrack it to the ignition switch.

Also check the crankshaft position sensor in the distributor-1deg and 120/180 deg should be fluctuating 5volts