Having trouble with OTA CA3080 making a VCA
It appears that a voltage source is providing an input signal to this voltage-controlled-amplifier, and a voltage source is desired as an output signal.

The CA3080 provides an output current at pin 6. A resistive load (to ground) is often used to convert this current into a voltage. This load resistor is missing. The voltage follower connected to this point then provides a near-ideal voltage source as output.
The value of this load resistor affects the overall gain - a large value gives a high gain.
The OP's circuit has nearly infinite resistance at this point, giving extremely high gain. An amplifier with infinite gain is more likely a limiter.

R9 (10k) is somewhat redundant. It is a good precaution while experimenting since it helps protect CA3080 from mishaps, by limiting IABC into pin 5 to a  reasonable value less than a few milliamps.

Be aware that the control voltage source CV has a control range from about +0.5V up to +5V. A dead span from zero up to about +0.5V provides no amplifier bias current (IABC) into CA3080's pin 5 IABC other than transistor leakage current.