When starting to develop mass +muscle which part of the body should be targeted first.Is there anything like order like first go for biceps then go for chest or nothing like that one can blindly follow his own ideas and start developing

@user285oo6 You should start with whole-body exercises. The term is "compound" exercises, which means they don't focus on any one body part. When you're just starting out, your entire body is a weak point, so there's no reason to focus on anything other than the whole body.

This answer is right up your alley. Whole-body exercises like squats, deadlifts, pull-ups, and dips are the best bet.