When I drive and reach the speed of about 60 mph, the steering wheel shakes a little. Does the wheel bearing or struts need to be changed?

I would start by having the tires carefully inspected and balanced if needed. A tire that has a broken internal steel cord can develop a lump or wave in the tread face which will cause the steering wheel to shake as the vehicle speed increases. Usually a tire that is developing such a problem is very close to failing completely [flat or blow-out] so have them checked as soon as possible. An out of balance tire usually just causes a general vibration or shake but can cause bigger problems depending on how out of balance they might be. Worn tie rod ends or other suspension components can cause a similar shake so have those items checked at the same time. Worn struts usually won't cause the shake you are describing but can cause the car to handle quite poorly and bounce excessively on bumpy roads. Wheel bearings often [but not always] make a grumbling/growling kind of noise as they start to go bad but usually won't cause a shake. A good inspection should quickly pinpoint the cause of the problem