If you're looking to get more acorns in Prodigy English, there are a few things you can do!
First, make sure you're completing all of the daily quests. These usually involve finding and correcting a certain number of errors, and doing so will award you with some extra acorns.
Next, take advantage of the many different activities available in the game. There are grammar exercises, writing prompts, listening tasks, and more. Each activity has its own set of rewards that you can earn, including acorns. So try to mix things up and do a variety of activities each day.
Finally, keep an eye out for special events that pop up from time to time. These often offer bonus opportunities to earn acorns (and other goodies). So be sure to check back frequently so you don't miss out!