Judging by the burnt areas around that connector, it looks like you’ve burnt out more than just the resistor. The tracks around that connector going to the micro look burnt too and the connector looks like it got very hot. The bltouch doesn’t pull the sort of current that imho would cause that amount of damage, max 300ma when activating the probe, I’d be surprised if the bltouch caused this. Either way that board looks quite charred. Maybe give it a clean up with some isopropyl alcohol and post the cleaned up pics and people can make a better guess as to if it’s repairable.