I can't see my reports regarding the inventory valuation summary and detail report even they give me access as Inventory Manager in QBO Advanced. Is there any solutions/

While the Inventory Manager role can handle inventory-related tasks, it does not include permissions to view all reports by default.

Consequently, you are unable to see the Inventory Valuation Summary and Detail reports.

The only way to gain access to these reports is to have a company administrator update your user role.
 

• You will need to request that an admin change your user role. An admin must either change your current role to Company Admin or create a Custom Role for you.
• The admin must ensure the custom role has the necessary report permissions. They will need to explicitly grant access to Reports and then specifically to the Inventory Reports section.

If you have questions, feel free to ask in the comments.