Hello @haris_khowaja,
#1 For enabling SSL on magento please check below url steps.
https://www.a2hosting.com/kb/installable-applications/optimization-and-configuration/magento1/enabli...
#2 For Robots file
Add robots.txt file to site root location and you can add one or more rules in this file. Each rule blocks (or or allows) access for a given crawler to a specified file path in that website.
Here is a simple robots.txt file with two rules, explained below:
# Rule 1
User-agent: Googlebot
Disallow: /nogooglebot/
# Rule 2
User-agent: *
Allow: /
#3 For Page load speed
- First of all enable cache from admin.
- Enable js and css merge option from admin.
- Add gzip compression to htaccess.
- You can install "full page cache" extension if you want.
- Optimize images.
- Enable flat catalog.
- You can check site score and issue from : https://gtmetrix.com
If you find my answer useful, Please click Kudos & Accept as Solution.