When you request access to a Page, you’re asking for permission to another person’s or business’s Page. You aren’t taking ownership of the Page, but are rather requesting access to perform certain tasks on the Page, such as view, comment or run ads.
You’ll be able to see this Page in your Business Manager, but it will show the person’s or business’s name as the owner.
Request access to a page from your Business Manager
Steps to request access to a Page from the Business Manager:
Go to Business Settings.
Click the blue Add dropdown button
Select Request Access to a Page.
Enter the Facebook Page name or URL.
Use the toggles to choose which permissions you need.
Click Request Access.
You've now sent your request to the Page admin or the Business Manager admin that owns the Page.
Once the admin approves your request, you will see the Page in your Business Manager.