There are websites that post a lot of vector logos that you can open in Illustrator, then copy+paste into photoshop. Paste as a Smart Object, and it will be resizeable like a PNG but will maintain the vector quality. You have to rasterize it though if you want to warp it conform to a curve in the template.
I use
https://seeklogo.com/ for most of my logos. Occasionally I have to draw one myself. I found this website and downloaded a ton of them when making liveries for Project Cars 2.
If you haven't used it, get familiar with the Pen Tool in photoshop so you can make and manipulate logos. When I have to modify one to fit a curve (typically sidepod geometry), I rasterize the smart object, 'warp' it to fit how I want, then trace it with the pen tool in photoshop to get the sharp outline. This is what I did to get the 'Philips' logo on the sides for this livery (Project Cars 2):
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