This is OK, I guess. I give it 7/10.
Highschooler gets isekaied with a magic book that lets her make magic potions.
So far, it's a tale of her making potions, selling them, and gradually expanding her business.
It's not a bad setup, but it's inherently limited.
Normally with alchemists, they can do research to expand their repertoire. They can learn to do things better, they can make better tools, they can buy recipes. But for this MC, that entire plot branch is excised and replaced with "zap the ingredients to get flawless potion, bottle included".
New recipes does show up in her book by magic from time to time, but that's not nearly as satisfying.
As such, the quality of the manga will largely depend on what she does with the rest of her time.
The author seems fairly smart, so it could be good, but it remains to be seen.