I've bought and installed the Magento theme, but unfortunately I'm facing issues during static-content compilation.

Answer:

Usually, Your problem occurs in 2 case:

1, You hadnt applied the compatible patch to your magento version or you had but you didnt read the file "readme.txt" in the patch

2. Using "ctrl + C" and "ctrcl + V" to transfer files may cause missing some needed files

I suggest you to use terminal instead:

This is just an example command:

cp -rf /Users/hieumai/Downloads/claue_v1.9.2/Themes/Magento\ 2.1+/lib /Applications/MAMP/htdocs/magento2-2.3.5-p2