I can’t take Twitter from my Apple store

Well you asked us to guess all about your specific situation.

Some possibilities:

• Your iOS version is too old. iOS 13.4 or greater is required.
• You changed country or region.
• Your account is restricted.
• Your iPhone is managed by an employer or educational institution.
• Your payment method has issues.

sadiya97 wrote:

because when i wanted to update it..I saw that it’s already updated

It certainly sounds like you have an iPhone 6 or earlier, which cannot be updated beyond iOS 12.X. Therefore, this iPhone can never have Twitter.

What do you mean you can't take it, what happens when you try?

You’re welcome.

Yes, the iPhone 6+, released by Apple over seven years ago, cannot be updated beyond iOS 12.X.

Enjoy your Apple gear.