Hi @Walha Yassmine,
I'm glad you were able to figure out the issue. And thanks for sharing the solution, which might be beneficial to other community members reading this thread. Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others ", I'll repost your solution in case you'd like to accept the answer.
Question: Unable to access Microsoft.MachineLearningServices with Azure Starter Kit for Students subscription
Answer: Microsoft Azure for Students Starter Offer (MS-AZR-0144P) doesn't include access to "Microsoft.MachineLearningServices". Go to Cost Management + Billing, under "Subscriptions" click "New Subscription" and choose "Azure for Students".
It turns out that the "Azure for Students (MS-AZR-0170P)" package is the one that provides $100 in credits.
Thank you.
Do not forget to Accept Answer
and Yes
for was this answer helpful. And, if you have any further query do let us know.