Applying for Scholarships With Few Volunteer Hours

I’m a senior in high school with barely any volunteer experience. I’ve volunteered at my high school’s festivals, an annual event my community holds once a year (I’ve done this since 8th grade), and for Special Olympics once in 2014. I tried volunteering at multiple hospitals in my area, but there were already too many volunteers. I’ve noticed that a few scholarships that I’m interested in applying to have been asking for exact start and finish dates, hours per week, etc.of my volunteer experience. I am confused with what to put for my volunteer experience or if I should even put anything at all! Any help is gladly appreciated.

Get as close as you can. Try to be clear. For example - 17-18 Jan - 16 hours at check in for ethnic festival