In  specs, you should consider 8GB of RAM a minimum for a laptop for photo editing, likewise a modern Intel Core i5 processor (or AMD Ryzen 5). These processors come with decent integrated graphics which will be more than enough for photo editing.
And your SSD drive should be 256GB as a minimum, too. Bigger is better if you'll be storing a lot of photos on the device, but you may be using cloud storage of course.
We recommend 1080p displays, as they'll allow you to see more of your photos, but if your budget can stretch to it, a laptop with a 4K screen may be worth investing in.
You may also want to see our guides to the best laptops for Photoshop and best laptops for graphic design.