-ANSWERED- What is wrong with my math.random and collision script?

Your scriptis VERY MESSY. To make this much more clean, you could make an array storing the parts. Then, it would loop the array(or another name for tableand list) and check the name. If the part name is equal to the current part name, then, it would break the loop and continue on. If it looped the whole thing and the name isn't equal to any part, then, it would do recursion until it is equal. This is a better alternative than a huge if statement with a lot of or's

I'm assuming you don't understand what the argument of the touched event is(because you are using it to check F1,F2 etc. even though there are no such parts in the character). The argument of the Touched event is the part that is touched. Since the player is touching

For the loop at lines 6 through 9, I am guessing you want to check if any of the 10 numbers listed is the number 1 or 10. But I am also thinking that you just want to find one random number and check if it's 1-10. Please clarify in the comments.

local parts = {"F1","F2","F3","F4","F5","F6","F7","F8","F9","B1","B2","B3","B4","B5"} -- stores the array of parts
-- the argument Part is the object that touched the part the event is connected to, not the opposite
-- i.e if the left leg of the character touched the part, that would be the argument
function OnTouched(Part)
	if Part.Parent then -- makes sure that the part's parent is not nil
		print(tostring(Part))
		local function recursiveFunc() -- recursion is a better way to go rather than an if statement with multiple or's
		for index,partName in pairs(parts) do -- loops the array
			if Part.Name == partName then -- if the part name is equal to the current part
					break -- break just ends the loop
			elseif index == #parts then -- checks if the index reached to it's maximum value
		-- I used recursion because after the loop ends, it would continue on in the code
	        -- without knowing that there is a part equal to one of the string values in the parts array 
		-- if there is a part equal to one of the strings in the array, it wouldn't call itself again 
					wait() -- very small delay just in case
					recursiveFunc() -- call itself again
				end
			end
		end
		recursiveFunc()
		local mag = Part.Velocity.Magnitude
		-- I put lines 12 and 13 outside of the magnitude if statement because the if statement on the bottom
		-- would not be able to access randomNum
		math.randomseed(tick()) 
		local randomNum = math.random(1,10) -- since you are going to use this again, store this in a variable
		if mag > 30 and mag < 60 then
		--[[
			-- going to comment this for now
			for i = 1, 10 do
			    print(math.random(1,10))
			    wait(1)
			end
		--]]
		end
	       if randomNum == 1 or randomNum == 10 then
		     script.Parent.Parent.FR.Name = "DFR"
	       end
       end
end
-- connects the event to the function so it would work when the part(script.Parent) is touched
script.Parent.Touched:Connect(OnTouched) 

Sorry if my indenting is bad. I had to put a lot of comments