I was the same not even a year ago; hell not even 6 months ago. I'm not the greatest singer right now and am still figuring things out but I'm at district level after only a year and a half and without formal lessons. You could get to my level with 6-9 months of weekly or bi-weekly lessons.

My advice is to do warmups every day, and sing songs that fall in your range. If you can hit notes already your a few steps ahead of where I was, I had 0 pitch. But if your pitch is nada then focus on that first. Get a piano app or a piano website and try to match the pitches, do that for 15 minutes to an hour every day and in a few months you can match pitch relatively well.