
Connect Shopify to Facebook
Step 1: Install Facebook & Instagram app on Shopify
Go to Shopify Admin
Go to Apps > Search for "Facebook & Instagram"
Install Facebook & Instagram by Meta
Step 2: Connect to Facebook account
Log in to your Facebook account
Select the Facebook Page you want to connect
Select Business Manager (BM) Account
Select the Ad Account that is running ads
Connect Product Catalog from Shopify
Step 3: Connect Pixel to Shopify
In the Facebook & Instagram app, go to Data Sharing
Enable Customer Data Sharing
Select Facebook Pixel and link to Shopify account
Press Save

Get Pixel Token to run ads (For Dev or Custom Setup)
If you want to use Facebook Conversion API (CAPI) to send event data without a regular Pixel, you need to get Pixel Token:
Step 1: Get Facebook Pixel ID
Go to Facebook Business Manager
Select Events Manager
Select Your Pixel → Settings
Copy Facebook Pixel ID
Step 2: Get API Token
In Events Manager, select Conversion API
Scroll down to Generate Access Token
Click Generate Token → Save this code to integrate into Shopify
How to add to Shopify:
Go to Shopify → Settings → Customer Events
Paste Pixel ID and Token into the corresponding fields

Check Pixel Activity
Use Facebook Pixel Helper (Chrome extension) to check if Pixel is recording data.
Check in Events Manager to see if events are being sent.