In the Doctype “Custom Field”, If the entered field type is Column Break, then the Label should not be mandatory.
Would you mind creating Github issue for the this.
Thanks for replying madam, I have created the issue.
Here is the link: Label should not be required if field type is Column Break bug · Issue #3440 · frappe/frappe · GitHub
Once Column Break is added, you can remove the label. It will be required for the new column and section break for generating field name.
Thank You Sir for the reply. It is working in the way you described.