Software Serial problems

[Timoraty]

I import the software Serial library to the example uart_rvc still getting error on

C:\Users\XXX\AppData\Local\Temp.arduinoIDE-unsaved202472-44280-gfaw8u.9rzd\uart_rvc\uart_rvc.ino: In function 'void setup()':
C:\Users\XXX\AppData\Local\Temp.arduinoIDE-unsaved202472-44280-gfaw8u.9rzd\uart_rvc\uart_rvc.ino:15:3: error: 'Serial1' was not declared in this scope
Serial1.begin(115200); // This is the baud rate specified by the datasheet
^~~~~~~
C:\Users\XXX\AppData\Local\Temp.arduinoIDE-unsaved202472-44280-gfaw8u.9rzd\uart_rvc\uart_rvc.ino:15:3: note: suggested alternative: 'Serial'
Serial1.begin(115200); // This is the baud rate specified by the datasheet
^~~~~~~
Serial

exit status 1

Compilation error: 'Serial1' was not declared in this scope