Apple Store not showing purchase history

Have you check here? -> 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

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On your iPhone or iPad

1. Open the Settings app.
2. Tap your name, then tap Media & Purchases. 
3. Tap View Account. You might be asked to sign in.
4. Tap Purchase History.
5. Your purchase history appears. Tap Last 90 Days, then select a different date range.

Learn what to do if you can't find the item that you’re looking for or if you find unexpected charges.

Because you need to check at -> View your purchase history for the App Store, iTunes Store, and other Apple media services.

On your iPhone you can check easily.

Go to -> Settings -> tap your profile -> tap Media and purchases -> View account -> log in.

Scroll to and tap -> Purchase history -> tap the last  90 days.

You will then see a list of 'years' and you can select a year to view.

You should know approximately what year you purchased.

Are you looking for iCloud subscription?

If so, check -> Go to -> Settings -> your name -> iCloud -> if you see 50 GB (or 200 GB or 2 TB) then you have an iCloud subscription.

If you have an iCloud subscription, you will receive a monthly bill from Apple, check your email box.

You pay monthly for iCloud storage.

Get more help and assistant from Apple directly, see Contact Apple for support and service -> Contact Apple for support and service – Apple Support (UK) 

For sure check 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 see "apple.com/bill" on your billing statement

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

Do you use multiple Apple ID?