@jaydensalazar971 welcome. You're way ahead of where I was when I was 16 years old. I loved the hot rod game but didn't understand many important aspects of it until I was much older...High school auto shop taught me quite a few things but some of the silly ideas I had in my head persisted until I was finally able to get my hands on a hot rod and work through things myself.
I'd like to share a few things about timing that I've learned in the past few years that might be (hopefully) helpful to you in your understanding and development as a hot rodder.
Visualize the pistons going up and down in the bores of the block through the cycles: valve opens: piston goes down creating "suction" to suck air & fuel into the cylinder, valve closes: piston compresses air/fuel, at some point the spark plug SPARKS to make BOOM which forcefully pushes the piston down the bore creating exhaust in the process, exhaust valve opens: piston pushes gas out of the exhaust valve.
We're focusing on the SPARK PLUG sparking with timing. Visualizing this: there's an optimal time for the spark plug to spark to produce the most amount of power. Imagine if the piston was coming up the bore and the spark happened! The piston would be working AGAINST the explosion and bad things could happen. Likewise, if the piston is already going down the bore and the explosion occurred, we're not taking full advantage of the compressed air/fuel mixture. In other situations (like if you had the distributor 180 out) it might be trying to spark when there's not really any air/fuel in the cylinder.
Let's now talk briefly about advance. Small block chevy engines typically "like" a total of 36 degrees of advance. When you set the timing of the engine AT IDLE (with the vacuum advance disconnected) this is considered your INITIAL timing. When you set this, you want to keep your RPM's down below 1000 usually at 800 or so.
WHY?
Distributors have mechanical or centrifugal advance which is activated when RPM's increase. If you take the cap and rotor off of your distributor you can see that there are springs and weights. What happens is as you put the pedal to the floor, these weights fight against the springs and this will mechanically creep your advance up. How much? If you're running an OEM distributor it's hard to tell. You
CAN (and should if you're able) get a timing light that has an OFFSET. This will allow you to determine how much mechanical advance is being introduced into your setup as you increase RPM's.
You
CAN also figure this out without a fancy offset light but you need to make up a timing tape and apply this to your harmonic balancer. You can also buy timing tapes, you just need to know the size of your balancer and they usually fly off pretty quickly. Fancy and expensive balancers have markings all the way around them to make this easier.
Fancy and expensive distributors usually come with bushings and springs that allow you to adjust how much mechanical advance is coming into the mix and WHEN:
see the following for reference:
https://documents.holley.com/44326b1b5d986a37979dd931867f4eda217792e9.pdf
Why is any of this relevant?
Well it works like this. You can pretty safety run a total of 36 degrees of timing. Working backwards you subtract your initial timing of say 12 degrees = 24 degrees of mechanical that you can "bring in" where you want it. If you were racing, you may find that if you bring in too much advance too soon that your rear tires start spinning and while that's cool...you're not moving and you lose the race. So you want to bring in the timing where it makes sense to do with the overall setup of the car.
I really hope that some of this information is helpful to you as you dork with this.
TLDR: As far as OPTIMAL TIMING for your ENGINE. The only way to know 100% is to put it on a dyno. The second best way would be to have it on a drag strip. Most of us just stick to 36 TOTAL. If you don't know how much mechanical your distributor is bringing in, you will want to figure this out because you do not want to crank up your initial too far and have mechanical exceed 36 -- the engine will live a short life if you do that.