I have a loud vibration noise every time my toilet refills. If I turn the pressure down, it goes away but takes a long time to fill. Any thoughts on how to fix this.

Try this How to Repair a Moaning Toilet - ballcock valve replacement - YouTube

The washer in your fill valve is bad.

Thank you for the recommendation. I replaced the valve last night, but I still have the issue and it appears to be in the wall or at the point of shut off to the toilet. The noise is diminsihed when I turn the water down, but it then takes too long to fill up. Do I have to turn the house water off to replace that valve

Shut the water off at the house shut off. Now unscrew the bonnet packing nut from the angle stop supplying the toilet. Back to the stamina washer assembly out counterclockwise. Turn the washer over and reseat it firmly/ reassemble, turn the water on and test. Is the sound gone? Good luck, Tom