How the Amex Platinum Saks credit works
Once you enroll your Platinum Card at the Platinum Card Benefits Portal, you'll be eligible for up to $50 in statement credits when you shop at Saks Fifth Avenue (in-store or online) from January through June, and another $50 from July through December. If you still haven't used your credit for the last half of 2020, it's your last chance before the benefit resets at the end of the calendar year.
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The credit will be automatically applied when an eligible transaction posts on your statement. There is no minimum purchase amount, but you do have to pay for your Saks purchase with the Platinum Card in order to receive the statement credit. Luckily, the card offers one of the best purchase protection policies to cover you against loss or damage, so it's a strong option to use, especially when you're buying higher-end merchandise.