how to make this movement system script cleaner?

on line 2, is there a better way to get the parent's move stat? i dont want to have to type a function for each number (4,5,6,7,8, etc.)

also is there a way to project selection boxes from line 4 according to the move stat ?

like a move stat of 3 would be 3 bricks in each direction, 4 would be 4 in each direction, etc.

(if it's math, i suck at math)

for i, v in pairs(game.Workspace.Map:GetChildren()) do
	if script.Parent.Move.Value == 3 then
		if v.Name == "TerrainB" then
			Instance.new("SelectionBox", v)
		
	if script.Parent.Move.Value == 4 then
		if v.Name == "TerrainB" then
			Instance.new("SelectionBox", v)
	
	if script.Parent.Move.Value == 5 then
		if v.Name == "TerrainB" then
			Instance.new("SelectionBox", v)
			
	end
		end
			
	end
		end
			end

	end
		end

If you are going to type absolutely same thing in every if condition, this may help you.

for i, v in pairs(game.Workspace.Map:GetChildren()) do 
	if script.Parent.Move.Value > = 3 and script.Parent.Move.Value <= 10 then		
		if v.Name == "TerrainB" then 
		Instance.new("SelectionBox", v) 
	end
end

So you can type as much conditions as you want if you put "and" and "or" between conditions. For ex. This script will work when value is between 3 and 10, or when equal to 3 or 10.