With 2020 all wrapped up, now is a good time to analyze how the year went.
There's a bunch you can look at to evaluate the year but I'd recommend installing Repeat Customer Insights to help crunch the data and draw out some advice.
Some really important areas to look over are your customer cohorts (e.g. how did newly acquired customers behave?), first product analysis (e.g. which products are growing the best customers), and the customer purchase latency (e.g. how long does it take for reorders).
Those three are critical for figuring out how the year performed. Granted, 2020 was an off year so don't take any metric as gospel but 2020's trends should continue for a bit into 2021 as the world recovers.
If you want more advice beyond the in-app insights, I publish many of my articles to my Knowledge Base. Even if you don't use my app for your customer analysis, you can pick up some strategies and ideas from there.
Get a snapshot of your customer behavior
The sooner you signup for Repeat Customer Insights, the more comparison points your store will have. Each 1st of a the month a new snapshot is taken and saved to your account for analysis.