What do I need to validate an EV certificate(SSL-E)?

1. Downlow below two forms from https://sectigo.com/legal

Subscriber Agreement
Certificate Request Form

2. Fill out and sign both documents.

3. Submit them here https://sectigo.com/support-ticket, putting the Sectigo Order ID in the subject.
Usually, it takes up to 10 business days to complete the validation process and get an EV SSL certificate issued.