@Jimmy Lieu ahh, I understand and thanks for clarifying.
First step is to determine how much you can afford to do. Say you want to do $5,000 in upgrades...
I would certainly not run out and get brand new cabinets as a first option. If you are hands on, I’d first try to sand and maybe paint them myself. Second option would be to pay someone to do that. It may cost you anywhere from $1000-2500 depending on your market and how many cabinets you have. People pay for updated kitchens: renters and buyers alike. Unless they’re falling apart, I wouldn’t replace cabinets.
I would 100% paint an updated and neutral color in the house. That’s cheap and improves aesthetics 1000%. Painting outdated window seals, baseboards and doors are icing on the cake.
Do things like update light bulbs to white vs yellow lighting. Change hardware on the kitchen and bathroom cabinets. If you can afford it in your budget, update light fixtures.
Ultimately kitchens and bathrooms sell and rent houses so do what you can to make those look amazing and functional. Replace bathroom fixtures if needed because those can get pretty nasty.
Other small things like replacing warped or missing HVAC registers add a small touch.
Curb appeal is also nice but I’d limit that to the things that don’t need maintenance like mulch or crushed rocks or something.
These are just top of mind ideas to get you going but start with a budget and maximize it!