Terraform - Certification
Hashicorp provide their own certification called the "HashiCorp Certificate: Terraform Associate".
I attained this in Late 2020, and overall much of the Exam was straight-forward if you've used Terraform before.
A common issue I came across was related to Terraform Cloud, and it's usage. It may be worthwhile signing up for a free account and testing it before you do the exam. However, it doesn't amount of a large portion of the exam in total.
The exam was an online-only proctored Exam and in my case was limited to PSI. You may experience waiting times to get into the exam longer than the exam itself.