They little spots on her skin and belly can be from allergies but could also be from a bacterial infection, especially is the dog is shedding badly. She may need a course of Keflex to clear it up. Also, when you bathe her, rinse well and when you think you've rinsed well enough, rinse 5 minutes more.
The bumps on her feet are called interdigital cysts...unfortunately a bulldog "thing". You could culture the lesions and spend lots of money for long term antibiotics and end up with a yeasty dog with interdigital cysts. We treat ours with Stridex pads followed by an application of hemorrhoid cream. The origin of the IDC is under the paw pad, not the blister part you see on top of the foot. So it's important that you wipe the area on the bottom of the paw pad with the Stridex as well and also be sure to apply hemorrhoid cream tot his area as well.
I have a handout I give to all my new fosters and adopters called Bulldogs 101, it's got solutions to many common bulldog issues. If you like a copy please private message and I'll send in an e-mail.