To track Google AdWords conversions, you need to get a unique Account Id from your AdWords Account. Follow the steps to find the Account ID:
Steps to obtain Google AdWords Account ID
login to your Google AdWords account. Once you do that, you will be redirected to the following page:
Hit the Tools icon as indicated by the red arrow.If you do so, a mega menu will appear on the screen. Select Conversions from therein.
Next, click on the (+) button:
After that, select the kinds of conversions you want to track. To track sales and other options, select the Website option.
In this stage, you will be asked for creating an action. You will be able to see the following screen:
Give a random Conversion name, select an appropriate category option. Here, we have selected the Purchase/Sale tag. Then check the radio boxes for suitable Value and Count options that meet your needs. After that, click on CREATE AND CONTINUE button.
Now, it's time to get the Account ID! Copy your Account ID from the global site tag. Take a look at the following screenshot:
Login to WP Admin Dashboard → WooCommerce → Conversion Tracking. Then, turn the toggle button on to activate Google Adwords functionality.
Next, paste the Account ID (as you copied in step: 6) in the given field:
Now hit Save Changes button and you are done configuring Google AdWords Account ID!