Question

with how much speed a bullet goes

Answer 1

it is from 150 m/s to 1200 m/s depending on the bullet

Answer 2

The velocity of a bullet is given in feet per second  in the United States. The 0.22 rimfire cartridge, which has a very small powder charge, sends its bullets on their way at between 370 m/s and 460 m/s. Cartridges in rifles -- centerfire cartridges -- propel their bullets at a much faster rate. The 0.220 Swift, which drives a very small bullet at over 1220 m/s, is the cartridge with the highest velocity.

Shotgun pellets vary very little in velocity. The slowest speed at 335 m/s, while the fastest travel at close to 427 m/s.