The Elder Wand is a powerful magical object, and its possession is associated with great power and danger. In the books, the wand only changes hands after a duel or a forceful takeover. It's not something that can be earned or purchased like other items in the wizarding world.
The closest you can get to experiencing the Elder Wand on Pottermore is perhaps through:
* Sorting Ceremony: The sorting hat could offer you a house known for its powerful magic or strategic thinking, both of which might be associated with the Elder Wand.
* Wizarding World Exploration: You can explore the various locations and characters associated with the Elder Wand, like Dumbledore's tomb, the graveyard where Harry fought Voldemort, or the history of the Deathly Hallows.
* Creating a Character: You can choose a character name that reflects your connection to the Elder Wand, or create a background story where your character has some sort of interaction with it (though it won't be official canon).
Remember, the Elder Wand is a symbol of power and conflict in the Harry Potter universe. While it can be a fascinating object to explore, it's important to respect its power and the consequences of its possession.