Hi my 2 year old British Bulldog's face is swollen, his breathing seems a little different and he's some small lumps over his body. He's been trying to scratch his face on the wall.

You seem to have a couple of sick dogs in your house

https://www.askmehelpdesk.com/dogs/w...og-711913.html

You had better take your bulldog to the vet if he is in this much discomfort; he has respiratory problems which could be serious.

With the swollen face and small lumps all over it is possible that your dog has had an allergic reaction to something.
Allergic reactions can trigger some breathing difficulty by constricting the airway, not a good thing for a bulldog, there breathing can already be compromised simply by being what they are, they are known as brachycephalic dogs, meaning that their nasal passage is shortened.
To top that off many bulldogs also have soft palate abnormalities, best to get him to the vet and have him checked out.