adobe premiere pro dont work

There are two things that you need to pay attention to:

1. The discrete graphics chip. You have a conflict between the discrete Radeon graphics and your CPU's integrated Intel UHD Graphics 620. Both of the GPUs use OpenCL, and neither can be disabled at all (as is typical in almost all laptops). This setup almost always forces you to use only the integrated Intel graphics for MPE GPU acceleration (not that it mattered much, as the discrete Radeon 530 graphics is almost as weak as the integrated Intel graphics).
2. The drivers for both the Intel and the Radeon GPUs. Premiere Pro 2020 has now gotten very picky about GPU drivers, and it is likely that Dell has not updated one or both of the drivers to a sufficiently up-to-date version for compatibility with Premiere Pro. 

Thus, you'd better check your current driver versions, and update them accordingly. Windows 10, however, is very finicky about attempting to use generic GPU drivers from the chipset manufacturers in place of the OEM-verified drivers: It will almost always reject such generic drivers in favor of the most recent OEM-supplied or verified drivers even if the OEM drivers are outdated or obsolete. Sometimes, Windows will allow you to "successfully" install the updated driver, only to reject that driver and revert back to the old and obsolete driver on the next reboot. There is absolutely no way around this behavior at all whatsoever, other than simply keeping that OEM laptop permanently disconnected from the Internet, deleting all traces of all old and obsolete drivers from the disk that's in that laptop, and then doing all driver downloads from another PC somewhere. That's an exercise in utter frustration to begin with. And simply reconnecting that laptop to the Internet to check Creative Cloud's activation status will restart the driver-reverting cycle: If Windows still deems that up-to-date driver as "unverified," then Windows will download and install an older and possibly outdated OEM-verified driver automatically through the Microsoft Update service on top of the newer driver - with absolutely no notification or warning at all whatsoever.

Those are the reasons why I would not buy a consumer laptop - especially a cheaper model - at all for Premiere Pro. Too many driver issues, caused in part by the failure or even refusal by such OEMs to update their graphics drivers to a sufficiently up-to-date version that is required by Adobe for its Creative Cloud programs.

One more thing:

You have less than six months of service life left in your current version of Windows 10 (the Fall 2018 Feature Update). It will reach EOSL this coming November 10. After that date, you must update Windows 10 to a newer feature update in order to continue receiving any updates whatsoever, including security patches.