Howdy Rasheed,
Welcome to the forums! I would love to help you find a solution for this.
I can see what you mean, the download link for an iCal is clearly missing from the Google Calendar page in your screenshot. I am not a true expert on Google Calendar’s sharing settings. But, I do know that there are specific settings within Google Calendar that will prevent the sharing of your calendar as an .ics file. Unfortunately I do not which settings exactly will hide those links, and I am not finding any Google documentations that sheds more light on this.
If I were you I would try changing the sharing settings of the calendar. Can you make the calendar public? Are you part of a Google Apps organization? If so, what are the universal sharing settings set like in you domain admin?
Unfortunately, since this question is actually wondering why Google Calendar is not showing the link, only an expert with Google Calendar will know the answer. These forums might not be the best spot to find an expert with that. If you are part of a Google Apps organization, you might try calling their 24/7 support and seeing if they can help you add those links.
Please let me know if you have any questions, or if there is anything I can do to help you along. Cheers!
– Brook