if action is always equal to reaction then two magnets on coming closer they met due to attraction in this case find the action and reaction and whether they equal or not?

When two magnets are kept near to each other(I.e. in their magnetic fields), consider a one of magnet as stationary. This magnet applies magnetic force equal to B.m (which you will study in +2) in say +x direction. The other magnet also applies the same force but in opposite direction I.e. in this case in -x direction. Thus, they are in opposite direction and we can conclude that the force by first magnet is action and by second magnet is reaction force