i am a high school student in jpn.
A little off topic, but do you mean "Japan"?
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
It's alright if English is not your first language.
im so interested in cryptocurrency so i forked Litecoin and changed name,value,totalamount andetc.. but only to do that, ofcause it seems like a scam cryptocurrency.
I think you are confused about what is a scam cryptocurrency.
What you made isn't a scam cryptocurrency, it's just a coin that has no market value.
Inherently, all kinds of coins have some or no market value but they are then used by others to scam people, whether by "stealing" or running a Ponzi scheme or if the developers ask the exchanges to inflate the price of their coin and then deflate it later to zero!
how do i change algorysm?
You are looking to change the Proof of Work function of coins, which is a cryptographic hashing function that takes a bunch of parameters and returns a hash. Examples are SHA256(SHA256()), Scrypt, Cryptonight and RandomX.
Alternatively there are a few Proof of Stake algorithms that are used by some altcoins too.
how to cryate block chain exploler?
Usually the coin developer is not the one who does that, one of the major blockchain companies makes one for your coin if it becomes valuable enough (and this is not only achieved by changing cryptocurrency code, but convincing exchanges to list your coin, and convincing investors to buy your coin).