unable to create a field using report formula and chart report Goal label not visible

hi team,

i would like to create a field in a summary report using report formula .
i have a "teams " multiple choice field - internal ,external whose target is 84,28 respectively each month combined target is 112 these all 3 values has to be constant value in the summary 

how this can be achieved ?

and one more issue which i have recently noticed is  Goal label is not visible in the chart reports 

please find the screenshot for your reference


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Pooja Manickam
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