sbug not being set

i tryed reading but it was not easy

It's a technical document. It's not supposed to be light reading.
To fully understand it, you'll probably have to read it several times, too !

this is what i coded

No, this is not what you coded, because it wouldn't even compile. "This" is something you re-typed in the text window. If you want to post something that you coded, you need to use copy&paste to avoid introducing more mistakes !
And while you're at it, please read the small print above the text window. It contains detailed instructions on how to post code so that it is legible.

main
{ SBUG="please send me a something"
something=SBUF
SBUF=soething+'my answer"
}

Okay. SBUF is an 8-bit register - a char. In C, you cannot simply copy a string (array of chars) to a single char by using a simple assignment. You will have to write a function that a) reads the string character by character, b) copies each character to SBUF, and c) waits until the UART is actually read to transmit the next character !

Also, you might want to configure the UART before using it. How to do this can be found in the documents mentioned above.

i tryed reading but it was not easy

It's a technical document. It's not supposed to be light reading.
To fully understand it, you'll probably have to read it several times, too !

this is what i coded

No, this is not what you coded, because it wouldn't even compile. "This" is something you re-typed in the text window. If you want to post something that you coded, you need to use copy&paste to avoid introducing more mistakes !
And while you're at it, please read the small print above the text window. It contains detailed instructions on how to post code so that it is legible.

main
{ SBUG="please send me a something"
something=SBUF
SBUF=soething+'my answer"
}

Okay. SBUF is an 8-bit register - a char. In C, you cannot simply copy a string (array of chars) to a single char by using a simple assignment. You will have to write a function that a) reads the string character by character, b) copies each character to SBUF, and c) waits until the UART is actually read to transmit the next character !

Also, you might want to configure the UART before using it. How to do this can be found in the documents mentioned above.