Data recovery from Apple MacBook Pro with T1 and T2 & Customer Data Migration Tool (LifeBoat)
If you have the Customer Data Migration Tool, it is actually very simple to use. It does not require any soldering or "DIY" skills. You basically just need a P5 pentalobe screw driver, andto  be able to remove the six screws that secures the the lower case.

Note that you say that you're thinking of using it on a water damaged computer. In that case you would want to use a multi-meter to first check that the power lines used by SSD power management IC (and the "Life boat" connector itself) haven't been shorted by the damage.