How far does 4GB of VRAM get you nowadays?

Recently I've finally built something that I could consider 'decent', 10th gen i5 and 16GB of DDR4 but what aggravates me the most is that I could only attain an RX 570 4GB within my extremely tight budget, how much can I get out of said cards nowadays? Specially given how stupidly high PC game requirements are nowadays. I play at 1080p, not even 2K.

I have a dripfeed of an income so it can be very difficult for me to even upgrade a storage device.