so half of those old wallpapers never going to work anymore eh what i was saying like i got this 1 wallpaper it has christmas tree little girl looking at christmas star the tree and her on the left side of wallpaper if you scroll to right a little bit she's pointing to the star
that's my issue i got wallpapers like that and not sure how to get it match resolution of screen
What do you want to happen? If the aspect ratio of your screen is different than the wallpaper is, it sounds like you may want to stretch or squash some of the wallpaper to match the screen ratio. But if there is a big difference in ratios, some images can look very bad.
If size/resolution is a problem, the same tools can batch resize to the phone screen dimensions.
Use one of those tools to make a version of the images exactly match the resolution of the phone.
If what you want for images with different ratios is pan and scan like your Christmas tree example, that will pretty much be a image by image manual crop. No way software can know exactly if you would prefer to lose some off the top, bottom, left, right sides if you don't want to stretch an image with a different aspect ratio then the phone.
Those tools should be able to let you do those on a case by case basis.
There are several freeware Windows tools that will bulk change the ratios. I believe IRFanView can do all of that.
Even if the images aspect ratios are the same but different resolutions than the phone, there are slight advantages from resizing them to the same resolution. Doing that eliminates the need for the phone to resize them every time they're displayed.