It has sold 50 copies. Plus about 25 free. It has not gotten many more reads as stories quickly vanish down the feed on Medium. Medium is not really designed for serial fiction. If you have a loyal Medium following it can work, but attention spans are short on Medium. I would suggest, posting 3 to 7 minute parts regularly if you try it. Although, you never know what will work here. You just have to try and see.
Some writers are trying Substack for serial fiction. I am currently writing the second novel in the series on Substack.

https://markstarlinwrites.substack.com/s/elise-boissonneau

Then I will probably serialize it on Medium when it is finished.
Kindle Vella is also coming out in July for serial fiction.
Best wishes!