Error Monetisation

I’m having error with facebook page, how and where can i contact fb support? Can someone send a link or something. Thanks.

You can contact FB support and advise them about the monetization error on the Page

You can do that on the business help center page but you won’t have that option if you don’t have an active business account. You can also subscribe to Facebook premium and have access to live support anytime.

Ye but i can’t find option to apply for support or something.

Access the "Support Center".
In the Support Center, you'll see a variety of topics. Choose a topic related to the problem you are facing.
Use the search box to enter the specific question or problem you're having. Facebook will show instructions and answers that can help you solve the problem.
If you are unable to resolve your issue through the available instructions, you can select the "Submit a request" or "Contact us" option.
Fill in your request information, provide a detailed description of the problem, and follow the required instructions.

it is here
https://www.facebook.com/business/small-business/advertise