Can you make a low res image higher res? Or for that matter make a rastor image vector?

Hi there, 

Thanks for getting in touch. 

Would you mind checking the steps mentioned in this article https://www.adobe.com/creativecloud/photography/discover/increase-resolution.html and let us know if that help?

Thanks,

Akash

Yes, and yes.

Chose File > Open As > Camera Raw.  While in the Camera Raw dailog box, right-click the image and choose Enhance, then enable Super Resolution.

Use Raw Details and Super Resolution in Adobe Camera Raw

Topaz Labs Gigapixel AI works fairly well and there's a trial version:
Gigapixel AI (topazlabs.com)

Adobe Illustrator's Image Trace feature allows you to vectorize pixel-based images:
Optimize results using Image Trace (adobe.com)