Pretty interesting!
The Wikipedia article has a ton of info. This magazine article which Wikipedia references is imo a better introduction https://knowablemagazine.org/content/article/technology/2022/cochineal-red-dye-bugs-moves-lab
Ateam has managed to bioengineer a fungi to produce it, but with very low yields. Another team has managed to get e coli to produce it, they estimated that a 100,000 L fermenter could produce the same amount as a hectare of land.
100,000L is 100m^3 which is a cube with 4.7m side length. ~15'x15'x15' or uhh ~~~the size of 4 F150s.
Edit to add: a hectare is 100m x 100m ie ~100 yards x 100 yards.