Hello
I can help you with your project to install the SSL certificate on your site, I do have extensive experience with Apache for over 20 years and have completed many similar projects, including as recently as last week.
To encrypt your site or sites, you will need a certificate first and then the Apache configuration will need to be updated/created correctly to incorporate both the SSL cert and also redirect all your visitors to the secure version of your site, without server loops or losing SEO rankings.
If you can get back to me and let me know if you have already generated your SSL cert and how many sites you are looking to encrypt, I can get back to you and confirm.
Thank you
Darren