How long would it take by spaceship to reach the vega star?

That depends on how fast your spaceship can travel, and what kind of a route you follow.

Spacecraft never travel in straight lines. But if you could do that, and if you kicked it up to,

let's say, a million miles an hour, then you'd pass the moon in 14 minutes (it took the Apollo

missions 3 days), and you'd be at Vega in only 16,970 years !