FWIW most Western militaries have specific ratios that are deemed acceptable for neutralizing a target (i.e. killing a baddie). These ratios are usually ranked based on the target's importance with a regular soldier being very low and a military leader being ranked very high. Often collateral damage from strikes against high value targets is more acceptable because the high value target is accompanied by lower value targets adding to the ratio.

I'm not aware of any such ratio used by the IDF. I've recently heard an Israeli government spokesperson say that the IDF has killed 13,000 Hamas including "civilian combatants". My guess would be that the IDF uses a very loose definition of whom they define as a combatant (note that the US for example has never used the term "civilian combatant" as that mixes the two groups: if they're a combatant they're not civilian and vice versa). Given that Israel also does not seem to acknowledge the 30,000+ lower bound on total deaths from IDF attacks in Gaza, it's entirely possible that Israel's ratio could be as low as 2 civilians per combatant in aggregate. But it's worth noting that this would still be much higher than anything used by any "Western" military even the US in Iraq and Afghanistan.

Given the rhetoric of Israeli government spokespersons, officials, politicians and other talking heads, I think it's more likely that the IDF effectively has no limits on how many Palestinian civilian casualties are acceptable per target. Former IDF soldiers have mentioned eliminationist rhetoric like "the terrorists who did Oct 7 are the kids we spared" or "anyone who hasn't left after the evacuation order should be assumed to be Hamas". This doesn't inspire confidence.