Sentinel2 Images

I´m using this script to download Sentinel2 Images to calculate NDVI (a green vegetation Index) using bands 4 and 8.

//Imagen para SENTINEL 2
var IMGSentinel= ee.ImageCollection ('COPERNICUS/S2') 
  .filterDate ('2020-09-01', '2021-03-31') //fechas disponibles ('2015-07-01' - actualidad)
  .filterBounds (geometry) 
  .filterMetadata ('CLOUDY_PIXEL_PERCENTAGE', 'Less_Than', 30);
var SentinelFiltro = ee.Image(IMGSentinel.median());
var SentinelClip = SentinelFiltro.clip (geometry);
Map.addLayer (SentinelClip, {
  max: 4000, 
  min: 0.0, 
  gamma: 1.0,
  bands: ['B4','B8']}, 
  'Imagen Sentinel 2');
print (SentinelFiltro);
//Map.centerObject (SentinelClip);
Export.image.toDrive({
  image: SentinelClip.select("B4", "B8"),
  description: 'Sentinel2_10m',
  scale: 10,
  maxPixels: 1E13,
  region: geometry});

I Could download the images, but I can´t see where is the image date, where is it?

The other question is about the bands. When I would like to opertae with the bands 4 and 8 the program I used (QGIS) don´t interpret the bands. They appear as:

and I can´t opperate with them.

How Can I solve this problem?

Gustavo Iglesias
[email protected]
Argentina