@berry34c If by the highest specs, you mean this model, for $1,349, then yes, it should run Sims 4 on ultra graphics settings.
https://store.hp.com/us/en/pdp/hp-spectre-x360-15-df1045nr
It has good hardware even for a gaming laptop, and definitely impressive for a touchscreen. But of course that comes with a premium price tag.
There are two other Spectres on HP's website with a dedicated graphics card, which will handle the load of Sims 4 much better than an integrated card. The second one's card and processor are a bit stronger than the first one's, but they're in the same class of laptop, probably able to handle high settings without any issues. You might be able to use one or two ultra settings, depending on how high you want your framerates.
https://store.hp.com/us/en/pdp/hp-spectre-x360-15-df0069nr
https://store.hp.com/us/en/pdp/hp-spectre-x360-15-df1040nr
You could get the same hardware in other HPs that aren't Spectres for cheaper. This one has the same specs as the second of the two immediately above, aside from the 4k screen:
https://store.hp.com/us/en/pdp/hp-envy-17-ce0031nr
This one is the same, except its processor is a bit stronger according to benchmark tests:
https://store.hp.com/us/en/pdp/hp-pavilion-15-cs3096nr
About the 4k screen: None of these laptops would run Sims 4 in 4k with anything resembling decent framerates. It would be simple enough to lower the in-game resolution, of course; I'm just saying don't expect a smooth lag-free experience in 4k.
By the way, I checked Amazon and a couple other sites, and it looks like the prices at hp.com are as low as you'll see, at least while this weekend's sales are active.