Yes, Amps. Most meters have to be in the circuit, in series. That means disconnecting the wire you want to check, so the current flows through the meter. Quite a few people blow them up by using the wrong scale, or trying to measure wrong.
I strongly suggest getting the clamp-on kind. Need to make sure it can read DC current, some are AC only.
This one will measure DC current by just clamping over the wire.
https://www.harborfreight.com/cm610a-600a-t-rms-acdc-clamp-meter-64015.html