Hi,

Release notes will self clearly says,

https://help.salesforce.com/articleView?id=release-notes.rn_general_guidancecenter.htm&release=230&type=5

This is a BETA Feature(Means fully not Implemented may see some issues).

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 In-App Learning with Trailhead is a preview and isn’t part of the “Services” under your master subscription agreement with Salesforce. Use this feature at your sole discretion, and make your purchase decisions only on the basis of generally available products and features. Salesforce doesn’t guarantee the general availability of this feature within any particular time frame or at all, and we can discontinue it at any time. This feature is for evaluation purposes only, not for production use. It’s offered as-is and isn’t supported, and Salesforce has no liability for any harm or damage arising out of or in connection with it. All restrictions, Salesforce reservation of rights, obligations concerning the Services, and terms for related Non-Salesforce Applications and Content apply equally to your use of this feature.


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You have to try the above in trailhead.


Check the below Offical articles for clarification,

https://help.salesforce.com/articleView?id=release-notes.rn_general_inapplearning.htm&type=5&release=230

https://help.salesforce.com/articleView?id=sf.admin_guidancecenter_setup.htm&type=5



Let me know if it helps you and close your query by marking it as solved so that it can help others in the future.

Thanks.