Can hiv-1 pcr test detect infection for hiv-2 too? because in my country there is only a pcr test for hiv-1 only, is the hiv pcr test done 30 days after exposure is conclusive both for hiv-1 and hiv-2?

In all countries, genetic tests ("viral load" tests) for HIV1 detect only that virus. However, in those countries, the antibody and antigen-antibody tests detect almost all HIV2 infections. On rare occasions, a specific genetic test for HIV2 is necessary, but only very rarely except in those parts of the world where HIV2 evolved and remains (parts of west Africa).