Hi @ANDRES_ORTIZ_ARDILA ,
Welcome to the forum!
While dual indexing itself is already supported in QIIME 2, the specific format in which you have - with separate forward and reverse barcode files- is not supported. There is an on open issue for this request here, though I'm not sure when and if this will be implemented. I had a similar dataset a while back that I was able to import into QIIME 2 but had to first modify it using QIIME 1's extract_barcodes.py. Essentially just combining those 2 files first. See this thread for some more details.
Hope this helps!