Hope you are doing well and sorry for the trouble. As described, you want a column containing a 'Running Total' from previously filled out forms fields.
The Calculate tab appears in the Properties dialog boxes for only text fields and dropdown boxes. Use these options to perform mathematical operations on existing form field entries and display the result. For more information please check the calculate tab for form field properties in the help page https://helpx.adobe.com/acrobat/using/pdf-form-field-properties.html