I'm using the Spark.getScheduler and was wondering if there is a way to check how much time is left on a active schedular.
No I'm afraid there isn't a way to do this out of the box. What you could do is get a time stamp in the script you are setting the scheduler in and add on the delay time that you are using for the scheduled module. You could then store this end time in a collection, log it or store it on the player themselves. Does that sound like it might work for you ? If you have any further questions just let me know.