Here is a step by step guide on how to add someone to your Google Analytics account with “Read-only” access:
1. Log into your Google Analytics account.
2. Go to the Admin section, and select the site that you want to provide read-only access for.
3. Click User Management.
4. Enter the email address in “Add permissions for:” and make sure you select “Read & Analyze”. Optionally, you can click “Notify this user by email”.
And you are done. The user will have read-only access to your Google Analytics data for your site.