When you unblock someone’s number will their messages or voicemails sent during the blocked time come through?

Hello Fadinha97,

Thanks for reaching out to Apple Support Communities. We see you have some questions about what happens when you block a number, and then unblock it. While you wouldn't get the messages, they are still able to leave a Voice Mail, and this link can explain how: Block phone numbers, contacts, and emails on your iPhone or iPad - Apple Support

Regards.