1 MPH = ~2.6 yards of carry distance. Variables include face angle, attack angle, spin axis, & environmental factors.
A 5% increase is common after just the first session. You’ll find that performing 3 workouts per week over a 6 week period will make this increase permanent. Speeds then continue to increase working through the progressive protocol levels. https://vimeo.com/499388930
It will increase all your club head speeds and therefore all distances should increase as long as the other factors stay the same.