Samsung issued the first firmware update to the Galaxy A54 today. It brings camera improvements as well as the usual stability improvements and bug fixes.
Notably, the firmware doesn’t update the February security patch.
The update, version A546BXXU1AWC4/A546BOXM1AWC5/A546BXXU1AWC4 is around 230MB in size. You should be able to find it under Software update in Settings.