Sony Has Opened Up Registrations to Buy a PS5 in the US - IGN

There will be a limited number of consoles available, but if you want to be within a chance, all you need to do is register for an invitation using your email and PSN ID (see here).

In May, Nvidia CEO Jensen Huang said he anticipates supply shortages for the RTX 30 series to last until "the second half of this year." In that same month, Sony CFO Hiroki Tokoi echoed those claims during an earnings call, stating that the company is expecting PS5s to remain in limited supply throughout next year.