Thank you for reaching out to Microsoft Q&A for this question.
To get the free credits available with your account, you can follow the steps below:
1. In Azure Portal --> search for "Cost Management + Billing"
2. On the "Overview" page, select the Subscription for which you need to check the credit. The subscriptions are listed in the main section at the bottom:
3. On the next page, you can see the credits remaining as a banner at the top of the page as well as in the "Spending rate and forecast" widget, as shown below:
You can also see this link for credit balance for billing account for a Microsoft Customer Agreement - Track Microsoft Customer Agreement Azure credit balance
Hope this helps. Please let me know if you have any questions.
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