Head over to the Copilot Studio product page at Microsoft.com.
Hit Free Trial and navigate through the prompts. This will start you off with a 60 day trial.
Trial Notes:
Trials can be extended after they expire.
The bots you create within the trial will last for 90 days beyond the expiration date of your Copilot Studio license.
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After you’ve gone through the trial registration, head over to https://copilotstudio.microsoft.com/. You should reach a page that looks like this:
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If all went to plan, you’re ready to create your first bot! Read on to find out how.