PE cert is a legal requirement to sign off certain processes, I would classify it as almost compulsory if you choose a projects career. It won't add any extra pay just like a ACCA or CFA won't either, it's just so common that it is expected norm in the industry.

In short, you need to get certified if you want to continue in this path. And no, it's nothing to shout about and won't make you a super star with high pay.