Welcome @JAMES504! Welcome to the USCCA community and the brother/sisterhood of firearms owners. That is a wide open question with lots of answers and none are wrong. Do you prefer a backpack-style or a duffle style? How much are you looking to spend. It doesnt take much to get into the $100’s. In all honesty, any well built (and that is key) duffel will work and has the advantage of not screaming “gun.” Well built is the key, because the weight adds up quick. A couple hundred rounds of ammo, muffs, glasses, holster, maybe a shot timer and tool kit and the weight just creeps up there. A wimpy bag will be blowing zippers and seams in no time. I know you want specifics, but please tell us a little more about your preferences and I will come back with specific suggestions. Also, do you have a preference if it screams gun bag, or do you want it a little more subdued?
But to start off, just a quick amazon search will give you a lot of choices such as this:
https://www.amazon.com/DBTAC-Tactical-Shooting-Lockable-Hook-Fastener/dp/B07Q9KQMXT/ref=sr_1_9?dchild=1&keywords=hk+range+bag&qid=1598014606&refinements=p_85%3A2470955011&rnid=2470954011&rps=1&sr=8-9
Here is what I use for handgun-specific outings if you must know:
https://www.amazon.com/G-P-S-Handgunner-Backpack-Range-Bag/dp/B00WQ55FMK/ref=sr_1_55?crid=37AWZNAFQ3A73&dchild=1&keywords=range+backpack+for+handguns&qid=1598014692&sprefix=range+back%2Caps%2C189&sr=8-55
Also, if you feel like writing about yourself, I would love to hear your story to gun ownership and what we can do to better welcome and attract new gun owners here.