The status of your survey is indicated by the blue arrows directly under the Page & Survey tab. New survey projects are Live by default.
If your survey is in Draft mode, you'll need to publish it, or make it Live before your target audience can participate.
Click the blue Publish Project button.
The Live arrow will turn blue.
When you're ready to share your project URL, click the View Live Site button in the top right-hand corner.
A new window will open with your published survey. Copy & paste the URL at the top and share it wherever you like.
Note the number in the url bar – it’s unique to this project, and it's how participants will find your project. (pid=yyyy, or www.publicinput.com/yyyy)
You can also create a unique URL or "shortcode" to customize your project, or build a custom link to create a version of your survey in another language.
Related articles:
How to change your survey to draft mode
How to close a survey
How to un-archive a project
How can I create a survey template to create several similar surveys?