Assuming you are asking in regards to the game Overwatch, and more specifically the character Genji:
According to the Overwatch Wiki, Genji's base damage per hit is 28. However, this number can be increased or decreased based on a variety of factors such as what level the character is, if they have any damage boosting abilities activated, etc.
Additionally, it's important to note that Genji's attacks can vary in damage depending on which part of an enemy he hits. For example, a headshot from his Shuriken will deal more damage than a body shot.
Overall, Genji is a fairly strong melee attacker and can deal decent amounts of damage with his sword or shurikens.