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Requirement
In this case, we will calculate the actual sales profit using the category name as a dimension. The formula for calculating the actual sales profit is:
(SaleAmount*(1-Discount)-UnitPrice)*QuantitySteps for creating a dashboard
1.Drag a Column chart and drag the English Product category name to Axis.

2. Add a calculated column on Table 'FactResellerSales'.

3. Input the expression given below and save it as SaleProfit. So the name of the Calculated Column will be SaleProfit.
('FactResellerSales'[SalesAmount]*(1-'DimPromotion'[DiscountPct])-'FactResellerSales'[UnitPrice])*'FactResellerSales'[OrderQuantity]
4. Drag the calculated column SaleProfit to the Values. Aggregation Method chooses sum.

Explanation
('FactResellerSales'[SalesAmount]*(1-'DimPromotion'[DiscountPct])-'FactResellerSales'[UnitPrice])*'FactResellerSales'[OrderQuantity]The calculated column above is a special column. We can use it as a normal column. It can be dragged to the dimension, values, filters, sort, etc.
The whole WAX is below for this dashboard request.
EVALUATE
SUMMARIZE (
CALCULATETABLE (
SELECTATTRIBUTES ( 'DimProductCategory'[EnglishProductCategoryName] )
),
'DimProductCategory'[EnglishProductCategoryName],
"FactResellerSales_SaleProfit_SUMX",
CALCULATE (
SUMX (
CALCULATETABLE (
ADDCOLUMNS (
SELECTATTRIBUTES (
FactResellerSales,
'DimProductCategory'[EnglishProductCategoryName]
),
"FactResellerSales_SaleProfit",
( ( ( 'FactResellerSales'[SalesAmount] - ( 1 - 'DimPromotion'[DiscountPct] ) ) - 'FactResellerSales'[UnitPrice] ) * 'FactResellerSales'[OrderQuantity] )
)
),
[FactResellerSales_SaleProfit]
)
)
)