https://www.gamespot.com/articles/how-fallout-76-microtransactions-and-atoms-work/1100-6462372/

We have known for a while now that Bethesda's Fallout 76, like many games today, will feature a microtransaction system. Bethesda was quick to clarify that you won't be able to spend real money on Perk Cards to unlock more abilities, with the microtransaction system instead limited to cosmetics. Now, Bethesda has shared more details on how microtransactions work in Fallout 76.

The microtransaction currency in Fallout 76 is called Atoms, Bethesda boss Pete Hines told Microsoft's Larry "Major Nelson" Hryb. These Atoms can be spent on things like new outfits and skins. You can earn these Atoms in the game by completing tasks, or you can buy them outright with real money. Bethesda hasn't said yet provided any specifics on Atom pricing, however.