As Apple users, like yourself, in the community, we have no access to your accounts or details and no way of checking why the amount is pending. We can't guess whether the pending purchase could be cancelled, or whether it must be paid before you can use the account for downloads, refunds, purchases etc.
Wondering if one of Apple Support's online articles (links below) can help guide you,
See if there is information about the pending amount provided in your purchase history:
How to: View your purchase history for the App Store and other Apple media services - Apple Support
See what to do: If your payment method is declined in the App Store or iTunes Store - Apple Support
Find out how to pay an unpaid order.
If a message says 'billing problem with previous purchase' or 'verification required' - Apple Support
If needed: Billing and Subscriptions Support website: (info. / support / contact options etc.)
Subscriptions and Billing - Official Apple Support