Once the subscription is expired, you cannot access the data or resources in your subscription.
Either upgrade to Pay-as-you-go subscription or contact the support team.
Azure for Students subscriptions often have a grace period after expiration. During this time, you might still have limited access to your resources. Log in to the Azure portal and check if you can still access your Azure Machine Learning Studio.
If you had set up any backup solutions or exported your notebooks and code to other storage services (like OneDrive, GitHub, or Azure Blob Storage), you might be able to retrieve your work from there.