A user named User1 must be able to view all DLP reports from the Microsoft 365 admin center.
Users with the Security Reader role have global read-only access on security-related features, including all information in Microsoft 365 security center, Azure Active Directory, Identity Protection, Privileged Identity Management, as well as the ability to read Azure Active Directory sign-in reports and audit logs, and in Office
365 Security & Compliance Center.
Reference:
https://docs.microsoft.com/en-us/azure/active-directory/users-groups-roles/directory-assign-admin-roles