I want to know how many Apple accounts are created from My same mobile Number

Apple doesn’t share that information.

Unless you’re using the number as the account, and then there’s one. This number-as-account is an option in certain places, but not worldwide.

In what context?

As stated already, in a few places you use use a phone number instead of an email address as your account identifier. Using your phone number for Apple Account instead of an email address - Apple Support That would be a single number used for a single account since the number itself would practically define the account.

Most people see a telephone number used as a trusted number. About trusted phone numbers and trusted devices for Apple Account - Apple Support

To me it is unclear for how many accounts this can be used. Some people here say only once and only for a single account. I haven't seen anywhere where Apple says for how many but to me it would make sense if it could be with more than one account since, say, a family might only have a single number for several family members. In any case, Apple won't tell that information since it is private information and if you should know it then you should know it already.