I have already pay 75₹ for storage but my apple storage is not updated yet

when you say your storage is not updated yet.. where are you looking?

If you are expecting your iPhone storage space to increase, that's not how it works. You cannot expand the storage capacity of your iPhone.

If you go to Settings > [your name] > iCloud, you should see at the very top x of x used.. That should reflect what you're paying for

What's the difference between device storage and iCloud storage? - Apple Support

Phone storage cannot be increased, it is a fixed size You bought iCloud storage.

What's the difference between device storage and iCloud storage? - Apple Support

Where are you backing up your device? Is it on iCloud? Have you purchased iCloud Storage?

When you get a popup message on your iPhone or iPad that the storage is full.

Look closely into the storage of the iPhone and iCloud.

iCloud storage is primarily for keeping a copy of your iPhone data safely on the cloud. If you delete data on iPhone, data on iCloud is gone too.

Turn iCloud features on or off

1. On your iPhone, iPad or iPod touch, go to Settings > [your name] > iCloud.
2. Turn iCloud features on or off.

Turn iCloud features on or off - Apple Support

iPhone Storage (Setting > General > iPhone Storage)

1. Total storage remains the same throughout the lifespan of the iPhone
2. Storage can not be enhanced
3. You may take back up on Mac or PC using iTunes without iCloud

iCloud Storage (Settings > [Tap your name] > iCloud)

1. By default, every user gets 5GB of free storage space
2. You can buy more storage based on your requirement of 50, 200GB, and 2TB with a monthly subscription
3. Based on your storage capacity you can back up your iPhone or iPad
4. Space can be shared between your family members for a storage plan beyond 200GB

You cannot increase the storage of an iPhone.

• However, you can optimize iPhone Storage by using iCloud Storage in order to save space on your device
• If you had turned on Messages in iCloud & iCloud Photos and you delete Photos, Videos and Messages from the iPhone then it is deleted from iCloud too, and vice-versa. At the same time, it is also deleted from all the devices that use the same Apple ID.
• And if you happen to take a backup either over iTunes or iCloud after deleting Photos, Videos & Messages all the photos and messages are deleted from the backup (iCloud/iTunes) too when you take the backup next time.
• Alternatively, you may upload data to iCloud Drive.

Settings > [your name] > iCloud Tap Photos > Choose Optimize [device] Storage --> Set up and use iCloud Photos - Apple Support

You may buy iCloud Storage. --> Buy more iCloud storage - Apple Support

Before you buy more iCloud storage see if you can manage your existing storage --> Manage your photo and video storage - Apple Support

Your photos are always available for both iPhone and iCloud. You delete it on the iPhone it is gone from iCloud and vice-versa.

To save space on your iPhone use optimized iPhone storage. Remember, if you delete in one it is deleted everywhere.

Get started with iCloud Photos:

1. Tap Settings > [your name] > iCloud > Photos.
2. Turn on iCloud Photos.
3. Select Optimize iPhone Storage to save space on your device.
4. 

With Optimize Storage, smaller, space-saving photos and videos are kept on your device while all of your original, full-resolution versions are stored in iCloud. And as long as you have enough space in iCloud, you can store as many photos and videos as you want.

How to check the storage on your iPhone, iPad, and iPod touch

The Apple Video below may help you understand better.