I was charged $4.99 but do not currently have subscriptions

Check again -> see the following Apple articles:

View your purchase history for the App Store, iTunes Store, and other Apple media services

View your purchase history for the App Store, iTunes Store, and other Apple media services - Apple Support

How apps, content, and subscriptions from Apple are billed

How apps, content, and subscriptions from Apple are billed - Apple Support

If you want to cancel a subscription from Apple

If you want to cancel a subscription from Apple - Apple Support

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Can’t find the subscription that you want to cancel?

You can cancel iCloud+ in your iCloud storage settings.

If you aren't trying to cancel iCloud+, find your receipt:

1. Search your email for the words "receipt from Apple."
2. On the receipt for the subscription, check which Apple ID was used.

• If a family member's Apple ID appears on the receipt, ask that family member to use the steps in this article to cancel the subscription. You can’t cancel a family member's subscription.
• If another Apple ID that you use appears on the receipt, sign in with that Apple ID and use the steps in this article to cancel the subscription.
• If you can't find a receipt from Apple for the subscription, you might have bought the subscription from another company. To find out which company bills you, check your bank or credit card statement. To cancel the subscription, you must contact the company that bills you for the subscription.

See also this Apple article: If you see "apple.com/bill" on your billing statement

If you see "apple.com/bill" on your billing statement – Apple Support (UK)

If you see an unexpected charge

You can request a refund* for a purchase that you don't recognize, but you must pay for the purchase first. You can also cancel a subscription if you don't want to continue it.

*You must request the refund within the refund period.

Refunds are not guaranteed. For more information, see the Terms & Conditions.

❗️Identify legitimate emails from the App Store or iTunes Store

Identify legitimate emails from the App Store or iTunes Store - Apple Support

If the invoice is not from Apple or was the money deducted by a stranger?

Contact your bank, they can find out who (name, address & account number) has collected the amount from your bank account, and when.

Depending on your bank, they can collect the amount back within 30 days.

Also report to the police.

Follow the steps here to identify the charge: link-> If you see 'apple.com/bill' on your billing statement - Apple Support