If he is in the "little or no exercise" category, he should aim to get into "Exercise" category. Exercise (in reasonable amount) is healthy whether you loose weight or not.
He should not be aiming for "basal metabolic rate".
He should not be aiming for "basal metabolic rate".
https://www.calculator.net/bmr-calculator.html
his (assuming a dude) energy expenditure is:
Basal metabolic rate: 1819 cal/day
Sedentary (little or no exercise) 2,183
Exercise 1-3 times/week 2,501