I just changed the brake hose and pads on my front right tire cause it was seizing up. I tried to drive home and the vehicle started vibrating around 45 mph.

Hello, what was the cause of replacing the brake hose? Seizing up is not a reason to replace a hose; troubleshooting to determine why the wheel is seizing upon braking is needed first. There are multiple causes possible of a wheel that engages first or seizes; it's important to troubleshoot what is happening and why. It's impossible to determine the cause of vibration without hands on testing. It could still be brake related since there's an unresolved issue present. Or it could be related to wheel balancing or an axle concern. All are guesses unless testing is performed. Seek guidance at a locals shop near you. https://repairpal.com/auto-repair-near-me