No. You should set your zoom to 85mm to see what an 85mm lens looks like on your camera.

The focal length of a lens is a physical property that does not change no matter what size sensor you put behind it.

The distinction between a crop (DX) and full frame (FX) lens is how big an image circle it projects. A crop lens can only cover an APS-C sized sensor, while an full-frame lens projects a bigger circle that can cover both a full-frame (135 format/35mm film) sensor and an APS-C crop sensor (or smaller format).

An 85mm DX lens would look exactly the same as an 85mm FX lens would on your D7500 crop body. On an FX body, the DX lens would vignette (show dark corners) where the image circle of the lens wouldn't cover the sensor.

Crop factor math (1.5x) is for finding which focal lengths equate the field of view on cameras with different-sized sensors. So, an 85mm lens on a DX body would frame approximately the same as a 127.5mm lens would on an FX body. It's something that's useful if you're switching formats to get an approximation of what lenses you might want. Like, say, telling a phone camera only shooter that the "standard" 4.5mm lens in their phone with a 1/3"-format (6x crop factor) sensor has 28mm-equivalence and the "telephoto" lens has 50mm equivalence, to give them a point of reference about lenses and sensor sizes.