You could go to Help and Contact at top of the page and type in Contact.
The reality is that scammers are rife on ebay, and ebay really would not know what to do with the infomation if you were to give it to them.
The best thing you can do is what you have, presumably, already done, that is add their ID to your blocked list.
Looking at your listings I can see why you've been targeted by a scammer. Your items are on the pricey side yet you have them listed using economy Royal Mail postage.
Do you realise you need to upgrade the postage method according to the item's value? Sending by RM's economy delivery will cover you for £20 if it is lost or damaged during delivery.
https://www.royalmail.com/sites/royalmail.com/files/2020-02/royal-mail-our-prices-valid-from-23-marc...
Have a look at the above link which will tell you which delivery method is appropriate for the item you are posting.
Also, always send to the address that Paypal gives you when your buyer has paid, to qualify for sellr protection.
