Excel's VALUE function has only one argument: where a is the value stored as text that you want to convert into a number.
This guide describes how to link checkboxes to multiple cells in Excel in Windows 11/10 manually, or automate the process ...
If you've used data validation in Excel before, you probably selected the relevant cells, clicked "Data Validation" in the Data tab on the ribbon, and created the rule in the Data Validation dialog ...