Global data structure accessible by any script?

Hello everybody, I’ll try to explain my problem in the best way possible:
in my game I have a script which reads an XML file and stores specific informations. I just have an empty game object which controls everything and through an instance of script reads the XML file. One of the read info might say: by accomplishing a general Action A I earn a certain amount of gold. Therefore, after I parse my XML I just store all the informations in a data structure (a list for example).
Now, in my game I have a general Collider A which, when hit, wants to accede the list and find the information of the Action A… how can I store this list in such a way that can be acceded from everywhere?

Take a look at the Toolbox. This is quite good way to store variables. Data serialization also can be done there