By including the serial number in your question.
marlin 35 cal. lever action. rifle/ Marlin makes the rifle ,but not the ammo for it.
50-350 USD or so
The glenfield version of the marlin mod 336 are selling for between 200-300 dollars,depending on the overall condition of the rifle.
I believe you have a Marlin 35 Cal. Model 336 CS rather than a C5. Look again.
I would value your marlin rifle at between 300-350 dollars,which does not include the value of the scope.
Your 35cal marlin was made in 1963.
The marlin model 336 in .35 cal will sell in the range of 200-350 dollars,depending on overall condition and a good bore.The price of the scope depends on the type of Bushnell you have and condition.
The value depends on exactly what model and date of manufacture of Marlin rifle you have as well as any accessories. As a general rule a "Plain Jane" Marlin model 336 rifle in good condition or better sells for about $225-$300 on the used gun market.
Will need the serial number to your marlin if we are going to help you on this question.
first 2 numbers are date code 23 stands for 1977
300.00 in good condition
35-125 USD