You are getting that error message because you have gains right after the goto commands. The goto should always be the very last thing inside of brackets.
Also, you don’t really need goto’s anyways because once a choice is chosen it will immediately go to the next choice, so you don’t need the label dressing_end either.
Another thing, you cannot use gains with the way you set up your dressing game. If they choose to go back and try on a different outfit then they will gain all those gains. So just remove the gains altogether. If you want to remember that choice later on, check THIS TEMPLATE and check THIS GUIDE.
If you absolutely must use gains, then you will need to add yes/no choices inside each choice option, LIKE THIS