It's pretty straightforward. Twitter even offers it as a feature for your own tweets, something called Tweet Activity (the bar chart icon on every one of your o

It's pretty straightforward. Twitter even offers it as a feature for your own tweets, something called Tweet Activity (the bar chart icon on every one of your own tweets). The specific stats e.g. impressions, engagements, detail expands, clicks, replies, etc. are all measured. And that's just what's exposed to us. Twitter doubtless has more than that on hand.