I need help with something and that is I need to copy many lines of code in one sprite into another. It would take way too long to duplicate it each time so it there a quicker way?

You can drag the code down and on top of another sprite and the code will appear in that sprite.

Yes, you can right-click the entire sprite and then change the costumes for the duplicated sprite to whatever you want, as the code will stay the same.

you can drag scripts into a different sprite like this