Make sure you're logged into your Facebook Business Manager
Go to Events Manager.
You should see your pixel(s) right here - https://prnt.sc/10p9gyn. Just copy the code and forward to us via in-app chat.
If you don't, then you need to create a new one:
Still on the Events Manager page, click Connect Data Sources and select Web.
Select Facebook Pixel and click Connect.
Add your Pixel Name.
Enter your website URL to check for easy setup options.
Please reach out via in-app chat if you need more help and we'll be more than happy to assist further :)