Ah, butane….
You ASKED for BHO…(butane hash/honey oil)…NOT the same thing. Despite how often you’ve heard them conflated.
Might as well have asked how much resin can wax hold. Not what you wanted to know.
That depends on the temperature and your solvent blend, probably the water content of the media and biomass too. And of course the media chosen.
Folks run in the range of 3:1 to 10:1 solvent:biomass
Or check out Solvent to Biomass Ratio (and other hits to “solvent ratio”)