My After effects is not opening and it is stucked

Sorry to hear about the issue, Harry. Please share the following details:

1. What are your system specifications (CPU, GPU, RAM OS version)?

2. What is the last loading module on the splash screen?

Meanwhile, try the steps suggested in the following article: https://adobe.ly/3WQL1vF

Let us know.

Do you have any 3rd party plugins?  If you do, remove these and see if it works.  If it doesn't or you're still having problems, check out this page:

https://community.adobe.com/t5/after-effects-discussions/faq-how-to-fix-common-after-effects-crashes/m-p/10684130#M94686

@nishu_kush might be able to offer some suggestions.