I want to send an email and shows 'User does not have a verified email address'

Hello @Cheysa Brito,

Check a User’s Email Verification Status

You can check a user’s email verification status by viewing the user’s details in Setup.

• From the Users Setup page, select a user and check the Email field.
• When the user’s email address is unverified, a Verify link appears next to it.
• After the user completes verification, the Verify link changes to Verified.

Your users can also see their own email verification status from the Advanced User Details page.

https://help.salesforce.com/s/articleView?id=sf.security_user_email_verification.htm&type=5