Digital Audio Workstation is the only thing really 100% necessary to begin producing..
If you want to get serious about music production, and anyone who disagrees here I just don't see how you could, but you need good studio speakers.
Professional songs sound the way they do a lot in part due to really efficient EQing, compression, limiting, and so forth. If you can't hear a certain frequency (aka on your laptop's shitty speakers) then how are you going to shape those frequencies to fit your track? Yeah you could make a song without studio speakers, but honestly it won't be quality. When you listen to your music on a laptop vs studio speakers the difference is extremely noticeable.
When you first begin producing there's going to be a time frame where you don't need studio speakers, because you're simply just learning. Learn your DAW, learn your synth, take masterclasses on them to know how to control every parameter, study some reference track's song arrangements, transitions and FX.
Eventually then, probably once you have made your track's general arrangement, it would be wise (necessary) to work with EQ and the entire frequency spectrum, which is where you really do need good speakers (or headphones, but personally I don't ever use them).