Can we scale a solidworks model? If yes. mention the way

Yes we can

In a part document, click Scale  (Features toolbar) or Insert  -Features- scale .

Set options in the PropertyManager.click on the green tick.

The geometry of the model increases or decreases in size according to the scaling factors and other options you set.

We can scale the model using features toolbar > scale 

we can scale  model in sketch entities, or part model it is insert --scale-- size of the scale --- insertion point of reference