Hi, Lisa! Welcome!
I had the VSG about 10 weeks ago and am doing really well - I'm down 85 pounds since surgery. I can't tell you how much weight you can expect to lose - that's definitely something your surgeon should talk to you about. Everyone is different, so we can't really make estimates based on other people's weight losses, but your surgeon should be able to give you some idea of your likely results.
Have you checked to see whether your insurance will cover the VSG, or will you be doing it self pay? I was originally going to have an RNY, which my insurance covers, but had to go the self pay route when I decided on the VSG. No regrets! Have you looked into any other surgeons in your area who might have more experience with that particular procedure? I'm looking forward to hearing more about your VSG journey!