How to check my privilege and what activities i can perform on stack overflow with my current reputation?
You can check this link: https://magento.stackexchange.com/help/privileges
It will show you all the privileges and the ones you have are marked with a checkmark.
And you can check other people's privileges from this link.
For example here are my privileges: https://magento.stackexchange.com/help/privileges/user/146.
or yours https://magento.stackexchange.com/help/privileges/user/19026