Here are some possible settings to start with, but really, the BMV needs to be tuned to your system and batteries to work correctly, there are several videos on Youtube from Victron describing this.
Battery Capacity - 440 Ah (but as Tony above says, they may no longer have this actual capacity)
Charged voltage - this should ideally be about 0.2V below your absorption voltage so if you normally charge at 14.4V then set this to 14.2V.
Tail current - 1.5% - this means that when the charge current is less than 1.5% x 440 = 6.6Amps and the voltage is above 14.2V then it will go to 100%
Charged detection time - leave at default 3 minutes
Peukert exponent - leave it at the default 1.25
Charge efficiency Factor - 90%
Current Threshold - leave at default 0.1A
Discharge floor - 50%
Leave everything else at default.
The key things to getting them to show a bit more sense are the Charged voltage, the tail current and the charge efficiency factor. However, once again, I echo Tony's comments above, if the BMV is not tuned to your batteries then it can lie to you, so watching the voltages and currents is a good indication and the BMV gives you this data. I trust my BMV but I started with new batteries and spent time watching how the batteries charged to tweak the parameters.