How do I find out if someone has applied for a K1 Visa and the status of it?

Are you a beneficiary?

Yes I believe my husband has applied for a K1 visa to bring a girl here and I need to know how to look into that. Please let me know if or howI could do that

This info is confidential.. however, you should be fine if you are legally married, and have not been divorced. He can't petition anyone if he is not single.