What is this counter in the progress bar?

I tried searching but I wasn’t sure what to call it and didn’t find anything. What is the number in the blue box (594,123) mean? It seems to increment every foot and the icon at the right changes back and forth between a mountain and something else.

They are Drops (virtual currency): How Zwift’s “Drops” Currency Works | Zwift Insider
and: Equip Your Virtual Self at Zwift’s New Drop Shop | Zwift Insider
also this: Hard Work Pays Off At The Drop Shop | Zwift

Thank you, I searched all over but didnt’ know it had anything to do with drops.