Twitter clone on Vue 3. What nuances should I know?

Question

Vue.js

Good afternoon comrades!
Such a question, I have been studying web devs for about a year, but I have never worked in an IT campaign, now so that when applying for a job they don’t give a probationary period, or so that it is as short as possible. So a familiar programmer advised me to make a clone of Twitter, he said that it would take a whole month.
What nuances should I know? Will it really take a whole month?
What will help me get a job with a high chance of getting a contract in the shortest possible time, and not 3-6 months?