Depends on how you define worth. Hermes scarves fall into that same category as the Birkin, the Hermes belt, Louis Vuitton logo bags, the known Chanel bags, Gucci loafers, Louboutins, etc. Yes, they all reached their reputation by being the standout item among the rest but in that they lose, for me, their value and desirability as they become the known piece that then predominantly gets bought to signify the wealth of the owner in its relative ubiquity, as they usually have an identifying detail, rather than being a celebration of craft and quality in its highest form.
That part of luxury where it acts as a status symbol just doesn't appeal to me in the least, but that's different for everyone. Yes, they are some of the nicest made silk scarves around but in my lifestyle, I don't see any place for one nor in the future, they're not my style and would instantly frumpify me. It's just one of those things, I think it's always best to see what's available at your price point and what appeals to you most, if that happens to be a Hermes I see no reason to suddenly not buy it but I wouldn't buy one purely on the basis that it's a Hermes scarf with the associations, good or bad, that come with that.
I've sold through Vestiaire AuldA, it's quite easy and quick once it's sold but it can be very slow selling, you really need to price it right. The commission is hefty so it really depends on how much you want for it. Though I'm sure you've got quite the ready audience for it on here if you post a pic. The Purseforum has a special thread area dedicated to Hermes scarves they may have more suggestion where to sell it, you may have more options if you still have the receipt.