Hi there Sultana! Creating a reprex (short for reproducible example) is very easy!
First, install the reprex package: install.packages("reprex") and load its library: library(reprex)
Then, follow the instructions here to create the reprex. The link I provided includes a discussion of how to add your data to the reprex, which will probably be key to helping you get the right eyes on this.
A reprex will ensure we're all looking at the same data and code, which helps us to help you!
One more thought: you mentioned wanting to see four different groups in your boxplot. It sounds like you may be interested in either faceting or grouping by season. If that's the case, you may want to consider (for example) using facet_wrap() with your Season variable.
I hope this helps!