The short answer is that if you want to learn your introductory chords on guitar then it’ll take about 3 months, and that’s if you do it every day. There are only 7 chords – so imagine learning one chord a week, and then giving yourself another month to master the chord changes.
You have to be patient. You will get out of it what you put into it. These things take time. Whether its learning how to walk, play basketball, read music, or in this case – playing an instrument. You’re body and brain learn things over time. Do it every single day. But
The trick is: Don’t give up. Ever.