If your afraid of blue damage use a nail. Apply it to the screw head and heat it in the middle with the torch... The loctite will loosen and the screw may be removed. If the 'permanent' loctite was used quite a lot of heat will be required.. I usually heat the top of the receiver a bit as that will allow the loctite to remain soft a bit longer. If all else fails drilling the screw heads is all that remains... good luck from the gunnut69
PS- some old timers used iodine to secure mount screws. A drop will cause rusting and the screws not only won't vibrate loose, they are almost impossible to remove normally. Drilling usually is the only answer and often the holes must be drilled to the next size and tapped...