Put Quantcast script on blogger template

Assume you have finished signing up process.

On gmail side

Check your inbox, open Welcome to quantcast email and click your confirmation email link as shown in blue line with red box below.

You might sign out from your gmail account

On Quantcast side

Click Add a website

Type your blog address such as http://oerip08.blogspot.com as shown on image

Loading... Quantcast script
Press ctrl-a, Quancast script will turn blue
Press ctrl-c, copy your Quantcast script

Note: In the html code of every webpage of your site, place following code < / body > tag and any measures tag...

On Blogger side

Click post list icon

Click template icon

Click Edit HTML button

Click Proceed button

Scroll down template script to find < / body > tag

Press ctrl-v, Paste your Quancast script before < / body > tag
Quantcast script has been copied and click Save template button

To check and re-check your Quancast script might work or not, Click Preview

Click Close button

Go back to Quantcast side

You will found "We are scaning your site(s)..." and you have got "P_code"

Now, you might signing out from Blogger and Quancast.

Oops! It just came up from my inbox.

Done!
I hope it might helps you!