Fireworks can be a worry for your dog if they are scared of them. Lots can be done to manage their fear, like sprays, drops, dens and more.
The important thing now when managing the fear is that after bonfire is over you get help then for next year to reduce your dogs fear.
It takes time to get rid of noise fears so as soon as bonfire has finished that is the best time to start.
Hep with managing the fear is available now, even if via zoom or a call.