Do you have it, have ordered it or are going to get one ?
If you have it or when browsing in the shop check the side of the box / cards on display as they may have something on the side saying “Assembly required” and “includes x tools” or “x tools required”
Or find the instructions and/or little bag of tools/small parts to check what is there (or in the shop as what’s included)
Most will use bolts rather than screws and are likely to have hex heads rather than classic screw heads. A hex headed bolt is screwed in using an Allen key, and needs the right size (which would normally be included)
Allen keys are typically a 90 degree L shaped bent piece of hex shaped bar. They can be used on either end, with the long end into the bolt and short end in your hand for quick screwing in and the other way round for better grip for a tight finishing off.
They are also available as screw heads in head sets for electric screwdrivers and with a at shaped handle if you get serious with hex bolts
If you can easily pop back to a hardware shop for tools, once you’ve established that the right tools are included then you can just go for it and then go back to the shop if you find you need something else.
Look through the instructions, identify and lay out the parts, grab a cool drink (water will do, but a nice gin, wine, cider etc will go down well - sip the alcohol rather than downing it up front and finish it off admiring your work afterwards)
When you finish assembly put the tools into a tin or box ready ready as the beginnings of your tool kit. (Don’t be surprised to have some spare bolts etc left over - it’s normal to have some extra - provided you did use as many as the instructions tell you)