Function.php problem

Both of those functions are supposed to be in wp-includes/option.php so maybe you deleted that file or overwrote it with one of the theme’s files?
You can download the WP zip for the version you are running, and use FTP or your host control panel File manager to replace just that one file, or the entire wp-admin and wp-includes folders.

Thank you. I didn’t overwrite option.php and it was still there.
Fixed the function.php now I get this error
Fatal error: Call to undefined function wp_fuzzy_number_match() in public_html/newsite/wp-includes/media.php on line 613

That function should be in wp-includes/functions.php as of WP 5.3.
https://developer.www.ads-software.com/reference/functions/wp_fuzzy_number_match/

Do you have a mixture of versions or an update that didn’t complete?

Joy,
where do I find the zip file for WP?

There’s a link in the header of every page on this site!
https://www.ads-software.com/download/