You will want to go into at least one if not two or three studs not just drywall.
Mounting a hangboard on a concrete wall.
Personally i would install the hangboard directly to the concrete.
While this offers great security you may not have this option.
In this video jon shows how to quickly and safely mount a hangboard aka project board over your doorway.
Then use the screws that come with the hangboard for the rest of the holes.
All together now all kinds of wall join in.
Traditional mounting requires one to screw holes into the wall and fasten the hangboard in place.
Put a wall plug over the end of a 3 screw and bang it into the wall with a hammer and tighten up.
However some of the more solid options can be used virtually anywhere.
Use 3 flat head screws to attach the hangboard through the plywood and into those boards.
Repeat this process until you have put in 6 screws 4 in each corner and 2 in the middle along the top and bottom.
Your completed hangboard mount should look like this.
If you mount it to a piece of plywood the screws would only be holding on to 3 4 technically 23 32 d i would use 1 4 or 3 16 x 2 1 4 or longer tap con screws in each of the mounting holes.
This is especially important if you weight more than 150 pounds.
We used 5 of them.
Use the butt of your leatherman or your knuckles or an actual stud finder to tap the wall all across the doorframe horizontally and locate the studs.
Line up the hangboard holes with the 2 4 mini studs.