A few useful links to better understand what is a Box-Cox transformation, why use it, and why use it in the context of time series!
- https://www.statisticshowto.com/box-cox-transformation/
- https://blog.minitab.com/blog/applying-statistics-in-quality-projects/how-could-you-benefit-from-a-box-cox-transformation
- https://stats.stackexchange.com/questions/253917/why-use-differencing-and-box-cox-in-time-series
- https://www.geeksforgeeks.org/box-cox-transformation-using-python/
In general, data transformations for time series:
- https://machinelearningmastery.com/machine-learning-data-transforms-for-time-series-forecasting/