No. The Switch 2 has a larger 7.9-inch screen compared to the Switch OLED's 7-inch screen. The two consoles have different dimensions, button layouts, and Joy-Con rail mechanisms. A Switch OLED case will not fit the Switch 2.
SUPCASE offers dedicated Nintendo Switch 2 cases for both models. Select "Switch 2" or "Switch OLED" from the navigation menu to find the correct case.