Can i file a bigamy in the Philippines if my husband in the US?

Yes. Unless you are legally divorced from a previous marriage, regardless of the country you were originally married in, you cannot remarry in the USA. The Catholic Philippines is the last officially secular country that does not have a civil divorce procedure for the whole population (only Muslims may divorce according to their religion), thus gaining uncontested consent to divorce from your Philippine spouse is unlikely. However, all states now recognise separation as grounds for divorce, although some states will require a minimum of 2 years separation.