Hey there, vikas kumar
The Azure credits ($100) comes with the Azure Student subscription, which you will need to apply for, through this link: https://go.microsoft.com/fwlink/?linkid=2062405&clcid=0x409
You will need to have a university email address which is used to verify you are a student when signing up. You will need to meet the requirements for this subscription, which can be found here: https://dori-uw-1.kuma-moon.com/en-us/azure/education-hub/azure-dev-tools-teaching/program-faq#azure-for-students
For a list of what is included in the GitHub Student Developer pack, please visit this link here: https://education.github.com/pack
You will need to scroll down to the experiences section where you can view what is included. If you scroll further down, you will see the section called "All offers"
At the top of this section, you will see a notification that tells you
Additional benefits are not included in the Student Developer Pack, but are exclusively offered by GitHub and partners for this Experience.
As you can see, Azure is listed as a partner offer. However, there isn't a link on that page where it directs you to apply for the subscription.
Hope this information helps,
Nathan