When you first sign up for Freecash, the system will automatically send an email to the email address you provided. The email Subject will be Action Required: Confirm Your Freecash Email.
This email will contain a verification link. All you need to do is click on that link and your account will be verified.
Sometimes your email provider can filter this into your spam/promotions folders, make sure to take a quick look through all of your various inboxes.
If you still have not received this, head to your Profile, then Settings, and double check that your email is correct. If it is not, you will be able to correct this there, and then hit the “Resend Verification Link” button found next to your email address. You’ll then need to click on the link it sends you.