How to drag an object with mouse

I've used Gamemaker for years, but am now new to Unity.

I'm making a 2D game where a player drags a Pokeball with the mouse.

• imported the sprite

• dragged the sprite into the scene.

• scene only has the camera and that sprite

• when I hit play, the sprite is visible.

What script or setting would I use to drag the Pokeball with mouse? I want the center of the sprite to be at the cursor when dragged.

 In gamemaker, I used:
  pokeball object:
         create event:
         set = 0;
         
         Step event:
         if(mouse_x>x-(sprite_width/2)&&mouse_x<x+(sprite_width/2)) //within width of sprite
         {
             if(mouse_y>y-(sprite_height/2)&&mouse_y<y+(sprite_height/2)) //within height of sprite
             {
                     if(mouse_check_button_pressed(mb_left)){set=1;}
                     if(mouse_check_button_released(mb_left)){set=0; }
             }
         }
         
         //drag object
         if(set==1){
             x=mouse_x;
             y=mouse_y;
         }