The league just started, so it is very early to talk about who will be the top scorer in La Liga, Robert Lewandowski will surely be in the competition for top scorer in the league, but i am not certain about Jude Bellingham, i know that he has scored four goals for Madrid in only three games, but he is a midfielder and i believe that after many games, the attackers in La Liga will score more goals that he will do, but it is possible that he will be amongst the top 10 in the list of topscorers.
You're absolutely right, Robert Lewandowski is a top goal scorer for the blaugrana, he will definitely contend for highest goal scorer this new season, the league is early to predict who will win, let's hold and watch out the potential players that would be consistent in goal scoring. Adding Jude Bellingham to the lists for goals, his chances are slimmed, despite netting crucial goals for Real Madrid, he's a midfielder and his roles are not open to goal scoring. I'm pretty sure Barcelona and Real Madrid will be pre-eminent competitors for La liga title this season.