@havanesefluff Are you committed to getting a Dell? Most Dell gaming laptops in your price range only come with a small 256 GB hard drive. While that's enough for Sims 3, your user data, and plenty of small apps like browsers, it might not be enough if you decide to install other large games too, or store a large amount of data like a music or photo collection. Of course, those kinds of files can go on an external hard drive, but you'd want games on the internal drive, and regardless, it's more of a hassle to deal with an external drive in addition to the laptop.
If 256 GB is enough, then this $700 laptop would do well—its Nvidia 1650 should run all Sims 3 content on ultra graphics settings, minus the two (water and high detail lots) that the game engine itself doesn't handle well.
https://www.dell.com/en-us/shop/gaming-laptops/new-dell-g3-15-gaming-laptop/spd/g-series-15-3500-laptop/gn3500edfrs
This one ($860) is the same laptop except with a significantly faster graphics card (a 1660 ti). That wouldn't make any difference to Sims 3, but it would help if you planned to play other more demanding games in the future.
https://www.dell.com/en-us/shop/gaming-laptops/new-dell-g5-15-gaming-laptop/spd/g-series-15-5500-laptop/gn5500eejvs
This may actually be a better deal than the one above, with a graphics card (an AMD 5600M) that's a bit slower than the 1660 ti but still much faster than the 1650. It also only has a 256 GB SSD, but for $750, you'd have plenty left over to ask Best Buy to upgrade the hard drive, if you wanted, and maybe the memory while they were at it, although you could do that yourself too. The processor is also significantly stronger than the one in the other two models, which won't matter to Sims 4 either but does help with CPU-heavy games, for example Cities Skylines, Planet Zoo, or Anno 1800.
https://www.bestbuy.com/site/dell-g5-15-6-gaming-laptop-amd-ryzen-5-8gb-memory-amd-radeon-rx-5600m-256gb-solid-state-drive-red-print-grey/6409419.p?skuId=6409419
This laptop is $900 and has a 1660 ti. Its processor is a bit weaker than the one in the first two laptops but still good enough for Sims 3. It also has a 512 GB SSD.
https://www.bestbuy.com/site/dell-g3-15-6-gaming-laptop-intel-core-i5-8gb-memory-nvidia-geforce-gtx-1660ti-max-q-512gb-solid-state-drive-black/6350872.p?skuId=6350872
There aren't a lot of websites out there selling current-generation Dell gaming laptops; the only other options I could find in this price range were older models on Amazon from third-party sellers. If you're willing to look at other vendors though, there are plenty of good options out there. Just as an example, this Lenovo is $800 and has a 1650 ti, which is a bit faster than the regular 1650; and a 512 GB SSD.
https://www.lenovo.com/us/en/laptops/ideapad/ideapad-gaming-laptops/IdeaPad-Gaming-3i-15%E2%80%9D/p/81Y4001JUS
If you'd like to see other options as well, let me know what details matter to you, and what other manufacturers' laptops you'd be interested in buying. Dell makes high quality laptops for the price, but so do a few other companies.
