You can create one from under freshdesk.com, using the 'Sign up' option. The website will collect your contact information before creating a new Freshdesk Trial Account for you.
Alternatively, you can use the below link to sign up for a new Freshdesk account -
https://freshdesk.com/signup
Happy Supporting!
If you signed up before Aug 9, 2021, please click Previous plans to view your applicable plans.