If I get a nose job will my freckles go away?

Rhinoplasty will not affect the freckles on your nose. Depending on what needs to be done the freckles may appear to move slightly (less than a millimeter). 

Not to worry. You will keep your freckles if you undergo rhinoplasty surgery. Removal would require some type of skin resurfacing procedure (laser, chemical peel, etc.). Good luck!