If you use Name Manager define a named formula, then all that will be seen in the formula bar is something of the sort = total
which describes the result but not its calculation. Rather more advanced would be to then use the immediate window of the VBA editor to hide the name.
so that it no longer appears in the list of names.
@NARAYANK991 True, 'Step In' within Evaluate Formula will expose the formulas if it is not combined with sheet protection.
It does place the formula a further step out of reach but all that is needed is to follow the steps.
It is interesting that Microsoft, in an article on performance, recommend not nesting named formulas yet I have always found it to be effective. That includes formulas that go 6 deep and even inverting a different 30x30 matrix for each row of the output table. Not that any of that is going to help the OP.