how to create bulb effects in after effects like this video link https://youtu.be/ro4YCmYTTHs

If your talking about how the yellow effect in the middle of the bulbs is done.

It looks like it's just two different layers the base and the yellow bulb.

They then animate the opacity of the top layer off and on.

Hi Aarti,

Thanks for reaching out. Adding and animating the Glow effects to the bulb graphic should work. Check out this tutorial: https://adobe.ly/4qVsUkL

Let me know if there are any other questions.