If the fuse is blown, the DMM will read 0 amps, but read colts fine.
Next step would be to measure something else for amps that puts out less than 10 amps. If that measures correctly the DMM nad fuseis good. If you don’t have something to measure, that’s where you take the DMM apart and ohm across the fuse. Short circuit is good. Open Circuit is a bad fuse.
First time I read amps with my DMM, my fuse kept blowing at much less than rated. I had to get a new DMM to measure amps.
You have a better DMM than the cheap one I had.