To Create the Consent form Follow the steps below :
1. Go to Set Up >> Forms
2. Click on Create Form
Create your own designed custom form here >>
3. Enter the Form Name
4. Drag & Drop the required fields, Text Field, Email, Button etc
5. Save the form once done
6. After Saving the consent form you get the three dot (...) under action button to Edit, preview or delete the form
Also, here is the video tutorial for your reference