[rpmerf]

Go under the hood. Remove the air cleaner. Move the throttle all the way open. See that the choke sets. Watch for the accelerator pump to spray fuel into the carb.

Could dump some fuel in the carb. If that gets it going, you have a fuel issue. If not, it's ignition.

Look for power at the coil.

Could use a timing light to see if the plugs are firing. Or take a wire, pull the boot back and hold the connector about 1/4" from an unpainted part of the engine while someone cranks.