What are signs of secondary skin bacterial infection in chickenpox. I have 3 spots that oozed w/ transparent yellow/gold fluid. Are they infected?

Maybe. Open skin lesions like those of chickenpox can be secondarily infected by various skin germs like staph or strep. Your physician can sort this out for you because it is sometimes difficult to tell with chickenpox.
Not necessarily. The blisters are usually fluid-filled. If there is purulent drainage that would be more suggestive of a secondary bacterial infection. Your doctor can shed more light on the matter. Take care.