Coustmer wise profit

It possible we can see coustmer wise profit

No. And that would not make accounting sense. Profit does not depend only on transactions with a single customer.

In reports you could try to use the inbuilt reports. Try “Customer Summary” and also "Sales Invoice Totals by Customer: Reports (click on reports tab and select). At least you would know who purchases most and thus contributes to sales and revenue. As for profit there are more variables as @Tut explained.