1998 Dodge Ram will not start

You need to have the computer scanned to identify why it isn't starting. If the light is on, there is a code stored in the computer that will identify the problem. Also, if you are getting both fuel and spark, then either the fuel pressure is low, the injectores are not putting fuel into the cylender (try starting fluid) or the spark is too weak to burn the fuel.

Check both. Here is a how to for checking pressure:

https://www.2carpros.com/how_to/how_to_check_fuel_pressure.htm

Let me know what you find. Also, most parts stores will lend or rent the tools needed to read fuel pressure and the check engine light.