I've pulled more than the 100 amp fuse rating, when blasting tones on a 1 ohm nominal load... but even that has rise. On music, it may see more than 100, but it'll be transient, so the fuse won't pop.
In simple terms, you won't be popping that fuse, unless you either a) clipping to hell... or b) bass racing at less than rated impedance. Both of which are pretty dumb to do on a budget amp.