Here we can disable copy and paste the scripts except the content stuffed in "block quotes" in blogger.
Step 1. Go to Blogger Dashboard >> Template >> Edit HTML
Step 2. Now search for the following code using Ctrl+F.
]]></skin>
Step 3. Paste the following piece of CSS code just above "]]></b:skin>" tag.
.post-body {-webkit-touch-callout: none; -khtml-user-select: none; -moz-user-select: -moz-none; -ms-user-select: none; user-select: none; text-align: justify;} blockquote {-webkit-touch-callout: text; -khtml-user-select: text; -moz-user-select: text; -ms-user-select: text; user-select: text;}
NOTE : If the above CSS code not working for some templates, then alter the code which suits to your template.
Step 4. Now Save Template, then your blog is protected except some portion.