I'd suggest getting rid of the plastic wrap lid and go with airlocks.
Depending on what yeast and/or amount of sugar is used you are basically making an apple wine. Some yeast are more alcohol tolerant so you can get a higher proof. With some turbo yeasts you can get around 20% alcohol production in as little as 5 days with just sugar. These "washes" are better for distilling into neutral spirits but thats a different kettle of fish.
As for yield the apple will not beak down much so unless you have a press you will not get a lot of the retained juice out of them. You could food processor them and put the pulp in chees cloth and then squeeze to get some juice out.
If you can find unpasteurized apple cider that you like it makes a starter with a lot more yield.
Wine making is fun you just need to make sure everything is surgically clean and sealed properly or omnipresent yeasts and bacteria can infiltrate and make an "off" final product.
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