How can i convince my parents to let me play on my ps4?me get ungrounded.

Do some chores around the house

Well from my experience as a child being grounded for bad grades (happened all of the time) I was never able to have my parents shorten my grounded time, which was 1-2 months per class or even grade, but I don't know whom your parents are so I won't be able to tell you if you should even be thinking about getting un-grounded. As you know for my parents I could never achieve my goals of becoming un-grounded, but if you think there is a chance then go for it, I recommend you start doing things around the house and doing things for your parents, thats about all you can do reallyUnless your parents take bribes 

Abachelors degree and associate degree