Most of the painted label on your bottle is gone, RC Cola bottles are somewhat common. Value is, sorry to say 0 dollars.
My bottle is a 1947 version and I only paid a couple dollars for it.
Will, your label says copyright 1936, but the label is a style from the 1940s. Your g in a square is Glenshaw Glass Co.
The date code is a letter on the side of the bulge just below the lip. “L” is for 1940, and M is 1941, etc.
What date you got?