Sitecore 9 - How to Create form.

01. Login to sitecore Desktop.
02. Click On Forms.

03 Click on create Form

04 Then Go to Blank Form

05. you will redirect blank form window.

06 Then you can Drag and Drop any section, input, checkbox, label, dropdown, ect.. you want

07 Click on save (top right corner)

08. Then Go to Content editor > Sitecore > Forms > {your form}

09. publish form.

Done.

Please Comment if you want know anything..
Thank you.