On most bodies, the G-spot is located around one to three inches deep from the vaginal opening, and is found behind the anterior vaginal wall – the side that’s towards the front of the body, like you’re aiming towards the belly button. For some, it may be situated slightly outside of this zone - so exploration and communication are going to be key in finding what position hits the spot just right.
You can’t touch the G-spot directly, as it’s behind the vaginal wall, but since that wall is thin and sensitive, stimulation like pressure, vibration, and texture can be felt against the G-spot very intensely.
Pro-tip: With arousal, the G-spot will swell with fluids and become firmer and more pronounced – aka much easier to find. So if you can't find it, get more turned on first by stimulating other areas like the clit, nipples, whatever gets you going!