Trying to make character move like frogger

Hello, I'm new to C# and unity and I'm trying to make a 2d version of frogger, right now i have;

if(Input.GetKey(KeyCode.RightArrow)){ transform.Translate(Vector2.right movementSpeedright Time.deltaTime); }

and i do that for all 4 keys, originally I was using Input.GetAxis ("Horizontal"); but that was messing with my other objects that move independently, BASICALLY all I want to say is, "if UpArrow is pressed, transform.position.y+10" this way the player would have to lift their finger up and press it again if they wanted to move again, any help would be awesome, thank you!