Turn off the light switch .

Remove the springs at the light. This should allow you to remove the bulb from the housing.

Unplug the bulb from the base. The bulb probably either 2 small metal pins in the back or a bayonet base. To release the bayonet base push the bulb toward the base. The 2 pin base just pulls straight out.

Take the bulb to the hardware store and see if you can find something similar. For an LED between 2700k and 3000k that’s the warm range for colors.

I gave this in baby steps to help you know what you’re getting into. I’m not insulting your intelligence.

Good luck