LIFETIME JEWELRY2mm Rope Chain Necklace 24k Real Gold Plated for Women and Men

How many dips or layers of white gold or 24kt yellow gold does it have? Like how many “dips”?

I will be wearing my chain in the pool and the ocean, will the color fade? And will the company replace it if it does duebto water?

It turns my neck green and burns whenever I sweat in it. Is there a way to fix this?

What chain do you suggest to be used with several different pendents in white metal, 20 inches long?