Can one singles object like have a colision script , or you need to put to all wall or it is not recommended to put collider script just for one object

Questions & Answers
1

Like using a vr hands and if it is touching the wall with a other tag it will do something ?

2

One object can have a single collision script and you can get all the information it collides with.

However, at least one object(either your vr hand or other object) should contain rigidbody.