I just wanted to know that I recite Quran almost everyday but then many maulana's and aalim's says we should understand what we are ready does that mean what I read Arabic is not counted ?

Yes what you recited it is counted and inshallah you will be rewarded for the recitation specially it is recommended to complete minimum one quran in this holy month
As per the Narration if one recites the one aayah he will
Get the sawab of the recitation of one quran don't miss the sawab of the recitation
Now understanding yes it is not only emphasised by ulama but it had been asked by quran and Ahlul bait as to reflect on the quran and understand the quran.if you understand the quran you will get sawab of reading and understanding both.