Honda cg 125 clone copy won't start after top end rebuild?

I renewed piston as it had crap compression and won't idle like if it wasn't having fuel. I took it apart and found that piston rings were past the limit and top one was seized to piston now after checking head for worp and putting back together with fresh gaskets. It wants to but won't start. I have tried everything I've checked spark it keeps going orange and blue. Checked its having fuel and tried putting fuel down bore ( it seems to lock up enough to push fuel out of exhaust). And compression test with finger (tight pinch on finger and makes a sound of a loud rocket) … It's a push rod engine so timing can't be out as the timing can't be messed with unless you take off flywheel cover. 157FMI valves set to 5.0 inlet exhaust 8.0

After replacing the rings, did you remove the cylinder wear ridge and deglaze the cylinder? Afterwards, cylinder honing is an excellent idea as well, and easily done at home with a fairly cheap tool mounted to a hand-held drill.

If not, your new rings won't seal and quite possibly may have already been damaged on the wear ridge. Too little compression means no starting. A simple finger test won't reveal that.