1995 Volkswagen Jetta Turns over but won't start.

Recheck timing marks and firing order
check coil

? Disconnect harness connector from Ignition Coil Power Output Stage (N157).
? Disconnect ignition wire from Ignition Coil (N152).
? Switch multimeter (Fluke 83 or equivalent) to resistance range.
? Connect multimeter between Ignition Coil terminals -1- and -15- and measure primary resistance.
? Primary resistance: 0.5-0.7 Ohms
? Connect multimeter between Ignition Coil terminals -4- and -15- and measure secondary resistance.
? Secondary resistance: 3000-4000 Ohms
If resistance values are not within the specified ranges:
? Remove Ignition Coil (N152) and replace Ignition Coil Power Output Stage (N157).
? Repeat primary and secondary resistance checks.

Have a lot of possibilities
but You have to take it one step at a time

Do u have power at the coil
when key on?
And you are sure that you have no spark

CAMSHAFT POSITION SENSOR, CHECKING
Disconnect harness connector on Camshaft Position Sensor at Ignition Distributor.

Connect Fluke 83 multimeter with adapter cables from VW 1594 to measure voltage across outer terminals of connector.

Switch ignition ON.
Specified values:
Up to 10.93 production, 49-states: 10 Volts min.
Up to 10.93 production, California: 5 Volts min.
From 10.93 production, all vehicles: 5 Volts min.
If OK:
Replace Ignition Distributor. See Ignition distributor, removing/installing .
If NOT OK:
Replace Motronic Engine Control Module (J220).

Remove the distributor cap and crank engine does the rotor rotate?

Relay # 3
check it check for power
did u check the plug and wires into the dist. Under the cap

Mark it and switch it with a similar one
u know that you have a crank sensor or engine speed sensor at the rear of the engine by the flywheel
you may wont's to give it a check