I have a 93 Honda Civic. It has bad struts and pinions. How much is it to fix that?

I have a 93 Honda Civic. It has bad struts and pinions. How much is it to fix that?

ASK the technician who diagnosed them.
noone knows what you mean by "bad"
and noone can guess what pinions you mentioned.

Pinion gears? Pinion bearings, rack and pinion steering gear?

Struts require special tools and experience,
If they don't fail a jounce and rebound test and haven't leaked a fair amount, show them to a tech and get an opinion and an estimate.
Then they can take your symptom(s) and find the causes.
safety inspect the suspension and steering.
The estimate for you in your area will be your best answer.