iclouddrive
You Will Find The “iclouddrive” Top Links Here. You Have To Click On The Link And Login Into The Account Using The Correct Login Details.
iCloud
https://www.icloud.com/iclouddrive
Unsupported Browser You can use your current browser, but iCloud works best with the latest version of Safari, Chrome, Firefox, Microsoft Edge, or Internet Explorer.
iCloud Drive を設定する – Apple サポート (日本)
https://support.apple.com/ja-jp/HT204025
iCloud Drive に保存したファイルやフォルダは、すべてのデバイスで最新の情報が同期され、iPhone、iPad、iPod touch、Mac、Windows パソコン、iCloud.com からアクセスできます。
Conclusion:
This Is How You Can Easily Access The “iclouddrive”. And Use The Features That iclouddrive Offers On Their Portal. If You Have Issues With Login And Other Do Let Us Know In The Comment Section.