Will there be radiation if nuclear missiles are not launched?

Yes (everything is radioactive, including people themselves), but it can be ignored. Nuclear missiles and nuclear fuel used in nuclear power plants are not an order of magnitude. Generally, the uranium in a nuclear warhead is only tens or even tens of grams, while the nuclear fuel in a nuclear reactor is at least several hundred kilograms. Moreover, in order to resist the high temperature of friction with air when it is loaded into the atmosphere, the warheads of nuclear missiles are usually wrapped in three layers and three layers outside, and the shell of nuclear reactors may be melted down (Fukushima nuclear leakage is the core melting). People can move around nuclear bombs without protective clothing, but they can't move around nuclear reactors of nuclear power plants without protective clothing.