48q 24V I don't know what else to do.

24 in verbal is not that bad. But retaking in 30 days depends on your target score. You are already close to maximum in quant. Focus entirely on verbal and don't get over confident in quant. Try revising concepts math as well to increase by one or two points. For verbal it would be more helpful if you can post some more detailed information in what section, what topic you are weak in etc.

For CR: Use powerscore/MGMAT CR - both are good. If you getting way too confused with what is being asked and what you are supposed to do for CR questions then go for powerscore. If you are good at identifying the question types and scoring pretty decent enough then you can use MGMAT CR
Caution: Over usage of powerscore will be detrimental. Some say its excellent but this is my personal opinion.

For RC: One of the toughest section in GMAT and quite harder to improve upon unless you don't use the right strategy. The best solution is veritas RC or thursdays with Ron videos. You can find his links in this link
https://www.manhattangmat.com/thursdays-with-ron.cfm. Then its practice with right strategy to improve timing. With this you can improve RC. I shouldn't be suggesting this as i am too weak in RC but have seen considerable improvement with these.
P.S: All of Ron's videos will be very helpful and you can check those out if time permits.

For SC: MGMAT SC is the bible. Read it two or three times. Practice as much as possible. While practicing try to identify all the errors in each wrong answer choice. If you couldn't find one post it in the forum, discuss it. Most importantly actively involve in answering questions with explanations. That will definitely help you a lot.

As i said above 30 days is too short time for improving verbal. Depends entirely on your target score. If you aim for 700+ then it will take more than 30 days to improve verbal.

Hope this helps

I agree that 30 days is a lot of pressure -- you may want to push your test date back to 60-90 days to really give it a shot. There are no magic ways to improve except significant study time and good strategies.

For basic Vocab improvement:

Start with your grammar skills first. You can ignore most of the challenging vocabulary on sentence corrections as long as you identify what part of speech each word is, and how it functions within the sentence. To do this, you'll need to spend some time with a solid English grammar review book. I recommend pairing a heavy-duty review book, like the Oxford Guide or those published by McGraw-Hill or Longman, with a "fun" book like Writer's Express or English Grammar for Dummies. I would also get MGMAT SC if you haven't already worked through it.

Read and listen to high-quality English publications. My recommendations include The New Yorker, the Atlantic Monthly, the New York Times, the Wall Street Journal, or any scholarly journal that you find interesting. Listen to NPR or audio books of English-language classics. Set a regular schedule for your reading and stick to it. Even thirty minutes a day will help you conquer Reading Comprehension.

Make a vocab journal. Write down any words you don't know as you encounter them. You'll start to notice that certain words appear over and over again. Make flashcards for the ones that have tricky definitions or mean the opposite of what you'd expect.

Think like a thesaurus. It is much easier to memorize synonyms for words than their full definitions. Start grouping words together mentally (and on paper) according to their meaning. For example, words like "pusillanimous," "poltroonish," and "timorous" would go on the "shy" list.

Seek out Advanced CR for harder vocab words. Aiming for a 700+ score? Once you've practiced identifying the conclusion, evidence, and assumptions and are confident with the Critical Reasoning question types on the GMAT, consider buying an LSAT practice guide like the LSAT LR Bible. The LSAT has significantly more challenging CR questions and the format is the same as those found on the GMAT. Don't neglect your GMAT practice, but if you can master the LSAT CR, then the GMAT questions will start to feel easier.

In general, I would spend time with developing a good knowledge of CR from Powerscore CR (as others mentioned) and work out your own RC strategy. You can find lots of blogs here on BTG -- every tutor has his/her own method. If you need more help, take a look at Veritas RC, or consider doing 3-4 hours with a good GMAT tutor to solidify your RC strategy. Good luck!