Are you sure you want to enable script editing for all content authors?

The problem I see with this approach is that you are giving a lot of power for those users and if they know their way around scripting they can mess up you website.

But you can still create scripts and make them available to those users through the click of a button for example. You can always create a ribbon button on the Content Editor which when you click it, it executes your script. Here you can find an example of generating a powershell report when users click on a button on the content editor. This points you to the right direction in this sense.

If your answer is still YESI want to enable that for content authors:

Looking at your screenshots seem like the role Sitecore Client Authoring is being granted but the role Sitecore Client Users denies access. The way Sitecore security works for roles is if there is one role which grants and another which denies access it will deny it. You can read more about it here

Are you sure you want to enable script editing for all content authors?

The problem I see with this approach is that you are giving a lot of power for those users and if they know their way around scripting they can mess up you website.

But you can still create scripts and make them available to those users through the click of a button for example. You can always create a ribbon button on the Content Editor which when you click it, it executes your script. Here you can find an example of generating a powershell report when users click on a button on the content editor. This points you to the right direction in this sense.

If your answer is still YES I want to enable that for content authors:

Looking at your screenshots seem like the role Sitecore Client Authoring is being granted but the role Sitecore Client Users denies access. The way Sitecore security works for roles is if there is one role which grants and another which denies access it will deny it. You can read more about it here