[urubu]

Depends on the activity level. According to this calculator:

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

[watwut]

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".