It's unclear to me how much it would help. Your laptop is very new with the latest series processor. You might do just as well to sell it and apply the proceeds to a 16 gb model. Also one of the options is a hybrid NVME M.2 disk which has a 32 gig Optane memory module and a 512 gig SSD on the same module. While not exactly the same as doubling the RAM it would provide enhanced performance which would be roughly equivalent by installing a part you CAN replace. The memory (RAM) is soldered to the motherboard not upgradeable and I am sorry the Virtual Agent gave you information that is inapplicable and actually somewhat misleading. Good luck.
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