in my photoshop and illustrator 3d option is not showing not even in window menu

3D in Photoshop has been removed.

You can stiill get Photoshop 22.2 to get the 3D stuff

https://helpx.adobe.com/photoshop/kb/3d-faq.html

For Illustrator

https://helpx.adobe.com/illustrator/using/about-3d-effects-illustrator.html

in the future, to find the best place to post your message, use the list here, https://community.adobe.com/

p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post (like this one has already been moved) if it helps you get responses.

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