If you are looking for technical assistance, be sure and include the version of Concrete and PHP that you are using.
The majority of issues to do with Bluehost and Concrete are due to Bluehost changing to an incompatible PHP version - that can explain a 500 error.
You might want to check whether your install has an .htaccess file with extra lines appended at the bottom, with the phrase ‘AddHandler’.
Bluehost will sometimes add lines to change the PHP version that the application is running, without warning.
This article might help to show what you can change:
https://www.bluehost.com/help/article/adding-handlers-to-change-your-php-version
But you may also need try changing the PHP in cPanel in general:
https://www.bluehost.com/help/article/php-version-selection
The PHP version you need will depend on what version Softaculous installed, and I simply don’t know if Bluehost has that up to date or not.
The broader advice with Bluehost tends to be to move away from them - they’re not stable enough.