acheedu-my.sharepoint.com is a SharePoint site hosted by Microsoft, typically used by businesses for document management and team collaboration. If you're asking 'is acheedu-my.sharepoint.com a scam', the answer is no — it's a legitimate part of Microsoft's Office 365 ecosystem. The site immediately redirects to a Microsoft login page, which is exactly what you'd expect from a private corporate portal.
For this kind of service, you don't need to worry about missing contact info or legal pages — those are handled by your organization and by Microsoft. The technical setup is first-rate: valid encryption, protection against common web attacks, and no history of blacklisting. acheedu-my.sharepoint.com reviews from a trust perspective are overwhelmingly positive because there's no evidence of wrongdoing.
The only thing to keep in mind is that this is a private site. If you're an employee of the organization that uses it, you're fine. If someone you don't know is asking you to log in here, that's a different story — but the site itself is legitimate.