To be honest, if you are at "Image136", then you are far away from a bomberman game.
But anyway....
1) Do not use the IDE's form editor to create the level. (I.e. do not place walls, and objects)
2) Improve naming => Image136 => PlayerImage (or if Player is a structure Player.Image)
3) Store your level as a 2 dimensional array.
3a) That means, you do not store pixel coordinates (like 64 or 128, ....), but simply 1,2,3....
3b) To display an image according to your 2-dim-array, multiply the coordinate.
Now with walls, and other objects stored in the 2 dim array, you should be able to check if the player is allowed on a field or not....
I know some of my hints are somewhat vague.
You set yourself a high goal. If you want any chance of archiving it (and of your teacher believing that you actually did it yourself), then you need to be able to figure some stuff out by yourself.