Follow the below steps to obtain the Publisher ID and Google Snippet Code from your Google AdSense account:
Step 1. Go to Google AdSense and click Get Started. If you already have an AdSense account, then Sign In.
Step 2. Provide the required information including your website URL and email address to set up AdSense. If you want to receive helpful Adsense info at your email address, then select the Yes option or else select the No option.
Step 3. Once you have provided the required details, click Save and Continue.
Step 4. Now, sign in to your Google Account to continue setting up AdSense.
Step 5. On the AdSense home page, you will find your AdSense Code which is the Google Snippet Code. Copy this code to your clipboard and then click Account on the sidebar.
Step 6. In the Account Information section, you will find your Publisher ID. Copy the Publisher ID to your clipboard.
Step 7. Now, paste the copied Publisher ID and Google Snippet Code in their respective fields on creator software.