This is an easy one. The scammers put no effort at all into hiding their nefarious intentions.
I’m confident none of you would ever fall for this! But someone will. And if they click on the link, they’ll arrive at a page that looks very similar to Paypal’s own website. But it’s not. And they’ll attempt to login to their own Paypal account. But when they submit their username and password, they won’t be logged in. Instead, they’ll have just given their credentials over to the scammers, who will surely use it for evil, not good.
If you receive an email that pretends to be from Paypal, but isn’t, please report it to Paypal’s Fraud Department. Then delete the email and move on with your day, after patting yourself on the back for refusing to be fooled.