Depends on your level really and what type of player you are. You may not even know honestly. What openings and positions do you like to play? Open, Closed, Tactical or Positional.

The easiest way to find out what you like is by trying a few and seeing if that gets you into positions you enjoy. If not try a new one. This can be a super long process so I do not suggest doing it this way. I would however recommend looking up positions in videos or books and magazines. I know…. books and magazines are super archaic but maybe find a position that looks interesting to you. Play through the moves in the open explorer on chess.com or lichess.org and it will tell you what opening it is. Then you can look up videos on that opening.

I also suggest when you find that opening for white you play only that opening exclusively. Do not play a bunch of openings. You will never learn it by changing all the time. Also do the same process for black against e4 and against d4.

I also think it is far more beneficial to learn and study mate in 1 and 2 patterns along with tactics and puzzles over openings as a beginner. It will greatly help your understanding of chess and how it works in the middle game. Hope this helps.