My 1992 honda accord doesn't always start then 20 minutes later I try and it starts right, what shall I do

Reading sections A and B below should help:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-46563.html

Because of the age of the car, I recommend replacing the main relay, Ignition Control Module, and coil. Most likely, this will solve your starting problem.