Can fluid come out of eczema. The skin is red with rashes that look like blisters, Itching at times but have sugar. All this after a cut. On antib & cream?

A qualified yes. If you meant atopic dermatitis then the answer is unusual. If you meant contact dermatitis , then the answer is often yes. I suspect that you might have used neosporin (or equivalent) OTC ointment on the wound site and have developed a contact allergy to one of the ingredients (neomycin). Try topical HC cream and stop the antibiotic ointment. If problem persists , see your doctor.