Quote from: btctousd81 on October 22, 2017, 05:27:52 PM

from 1 sha256 private key i can create WIF private key and public kay pair which is
5HpHagT65TZzG1PH3CSu63k8DbpvD8s5ip4nEB3kEsreAnchuDf 1EHNa6Q4Jz2uvNExL497mE43ikXhwF6kZm

That is NOT a public key.

That is a bitcoin address. Specifically, that is an uncompressed key P2PKH bitcoin address.

From that SAME WIF private key, you could also generate a compressed key P2PKH bitcoin address:
1BgGZ9tcN4rm9KBzDn7KprQz87SZ26SAMH

Furthermore, you could create 2¹⁶⁰ different P2SH bitcoin addresses. Here are a few of them:
38fEX6RbBBMmpu3nbbuULku1xyrrzqqqnE
3Q2iKGxFppUJEZUTUMmahjwUoLNRqDY9o3
3CZj1DTSHD4vhr3zALL3pgs6acyw1deYDt

Quote from: btctousd81 on October 22, 2017, 05:27:52 PM

how would i get p2sh address for something like that ?

Build a bitcoin output script. Hash it. Concatenate a byte value of 0x05 in front of the hash value. Encode the result with base64check encoding.

Quote from: btctousd81 on October 22, 2017, 05:27:52 PM

or am i missing again something .

Probably.

Quote from: btctousd81 on October 22, 2017, 05:27:52 PM

does the p2sh address's private key also falls in

int range
1 - 115792089237316195423570985008687907852837564279074904382605163141518161494336

if so then how can i generate a pair ?

P2SH means "pay to script hash". It doesn't necessarily need a key, but is it is safer to build a script that requires a signature (in which case a signature would be required).