What details are these? If you think the price is wrong then you would have to contact Apple. Don't forget, however, that in the USA for example that taxes may not be included in the base price but will be added to a final invoice.
If you mean your personal details read this article about managing the information you use with your account --> https://support.apple.com/105023
If you need to change or update your Apple Account payment method read this article --> https://support.apple.com/118293
This support page has information about contacting Apple support and service ➔ https://support.apple.com/106932 If live support options (chat and/or telephone) are available they will show near the bottom left.
- Telephone numbers may only work when calling from the same country.
- Chat options (telephone numbers appear as active links, not plain text) may depend upon cellular connectivity. If a number shows as an active link, click on it to see additional options.
- If chat is not available on the top level support page, try selecting your hardware and narrow down your issue to see if a support article offers a support link offering chat. For example, the contact support link on this page https://support.apple.com/119902#zerobalance offers a chat link about emptying account balance even on a computer where the top level page does not offer any chat.
With an iPhone, iPad, or Vision, you may be able to chat using the Apple Support App if it is available in your country —> https://apps.apple.com/app/apple-support/id1130498044