How do you handle estimates/quoting in the field?

Hey everyone — I'm 18 and learning about the trades industry because it is definitely the route in today’s age.

Quick questions if you have a minute:

How do you currently put together a quote on a job site?

How long does it take you start to finish?

What's the most annoying part of your back-office work — estimates, job docs, permits, customer follow-ups?

Is there any software you already use? Love it or hate it?

Genuinely just trying to learn. Appreciate any honest answers — brutal feedback welcome.