Sorry if this seems like a dumb question but on front shocks with the reservoirs

Is the reservoir filled with oil and the shock filled with nitrogen?

not a dumb question at all .the reservoir is mostly nitrogen and there is a piston to separate the oil from the gas . as the rod and piston asm. travel into the shock body oil is displaced so you need a area for fluid to travel to, this is the reservoir. a floating piston separates oil and gas also keeping oil pressurised. not all reservoir shocks have " clickers " adjustments i hope this helps

So when recharging a front shock with clickers should the oil be changed or refilled or whatever along with the recharging of the shock?

The whole thing needs to come apart for service, the shock and the resevoir. Once you take it apart you can inspect and or replace any seals etc before you refill with oil and nitrogen.

You need special tools to do this. These shocks are under pressure so do NOT take them apart without discharging the nitrogen first. Based on your questions you need to send your shocks in for service.

It's really not all that hard to do. You make it sound life threatning. Don't wear good clothes while you're doing it.

,,and the rule still stands---- DISCHARGE the pressure before taking apart!

Yes, agreed proper safety precautions should be followed, which I feel was Jeff's intention. I would also encourage anyone to learn the skills necessary to do it themselves if they feel it's within their capabilities.

Don't even think about taking your shocks apart if you don't have the proper tools,you will do more damage
than anything else...
Very straightforward job but you need the proper equipment !