Is your hay dusty or the pellets? And is it a bit warm where your rabbit is kept? To me that just looks like pellet or hay dust stuck to some dampness around the nose? The minor dampness can be from dusty hay/pellets causing a little bit of nasal discharge, or it can be from when a rabbit is getting too warm and the increased respirations can cause some dampness around the nose which the hay/pellet dust sticks to. This would be normal and not usually a problem, though I would suggest shaking out any dusty hay/pellets, and if your rabbit is getting too warm, provide some ways for your bun to keep cool in the warmer temps.
https://wabbitwiki.com/wiki/Hot_weather_concerns
However, if you see any white sticky discharge, the condition worsens, and/or you have any concerns your rabbit is unwell, then it's always best to consult with a knowledgeable rabbit vet.
https://rabbit.org/vet-listings/