I have not made any changes to the theme files, I have only made edits on the menu, logo, & such. I did upload the child theme I saw on the other thread I wrote on before, but the font is different and I don’t know how to change it.

You can change the menu font from the theme styling settings as shown in the first two attached screenshots.

Also please read the Theme documentation as shown in the third attached screenshot so that you can understand the theme and its settings.

 

As far as https://codex.wordpress.org/Child_Themes goes I tried saving the style.css sheet and uploading it how they explain there, but it gave me an error. Is there a video tutorial? I’m sure I missed something.

You are doing it wrong. I shared that page in the following topic so that you can understand the child theme. Do not create it again as i have already shared it in the following topic so just use it.

https://support.shufflehound.com/forums/topic/nofollow-on-parner-slider/

How can I remove both on dekstop and mobile the shopping cart icon? (my original question on this thread.)

I have already answered it above in this topic.

Is there a video tutorial on how to save/upload a child theme from the original files?

The following tutorials will help you.

http://freewptp.com/why-and-how-to-create-wordpress-child-theme/