I have a CZ 527 carbine in both 7.62x39 and .223 and I really like the little rifles, other than that my 7.62 one split the stock really bad and required a significant bedding repair. IF YOU HAVE A 7.62 VERSION, GLASS BED / REINFORCE IT!
Back to scopes and rings. I ordered a set of Talley and Burris rings from Prophet River as I couldn’t find the Warne ones at the time. I mounted a Leupold 2-7 compact on the .223 and an old Simmons 2.5-8 Whitetail I had on the 7.62. In both cases, the rifles could have handled a lower ring height and still cleared the bolt handle. I actually find the Leupold compact a bit small and will likely replace it.
For your 7.62, I would recommend watching the EE for a decent used 1.5-5, 2-7, or even a 3-9 standard sized scope with an objective bell in the 32 size. A 36 mm objective may also work. Overall length needs to fit behind the rear sight as removing it is not a option for me. A used Leupold, Burris, Nikon, etc should be easily available if you watch for a bit. Some of the Bushell Elites Series were decent too and buying from a member here with a good rating pretty much ensures the scope will be fully functional. Heck, I have an old Tasco that is about 25 years old on a Savage 99 in .250 that still operates great and has done everything I ever asked of it. I love quality optics and have a Tangent Theta on a target rifle but I match the tool to the task and spend money where I think I need it, when I have it to spend. Stick to your price range, shop around and you can pick up a great scope for that rifle. Perhaps you can even save enough to buy some practice ammunition which generally pays bigger dividends than buying a higher priced accessory. Report back and let us know what you picked and how it worked for you.