Shoot it to see what it does.
Depending on the barrel length, I aim to bed the first 2 ½ to 2 ¾ inches and free float the rest. 3 inches used to be favored, and lately more shooters I know are free floating full length. I trim off unevenly extruded bedding compound to eyeball symmetrical, hoping for symmetrical support/contact under the bedded section of barrel.
There may be better ways.

My home grown bedding has improved all but one of a half dozen rifles and that one shot the same, not worse. Two improved dramatically. Shoot a group with it before finessing the bedding to see if you have lucked into a sweet spot for accuracy.