When you create a form, the form title is automatically displayed in your form dashboard as the form name. You can rename your form for internal use, without changing the actual form title displayed in your form. This helps you retrieve forms more easily in your dashboard.
How to rename your form
Go to your Tally dashboard and click the three dots → Rename.

Alternatively open your form and click the arrow icon to rename your form.

This will only change the name of your form for internal use. To edit the form title visible to your respondents, open your form in the editor and type a form title.

How to hide the form title
You can simply leave the form title blank in your form. When embedding a form you can also choose the option
Hide form title
to remove the visible title from your form.