the motherboard will support the maximum usage of PCIe which is 100w but that is edge case and most average pull on the PCIe from a PCIe only graphics card is 75w which is within spec.
If the graphics card you plan to use requires external power from the PSU, then you have to take into consideration a few things.
#1: does the PSU have enough wattage to support both the system as well as the graphics card when under full load?
#2: Does it have enough efficiency to support said wattage under load?
#3: Is it built with enough quality components that it won't just burn out or catch fire?
#4: Does the PSU have the necessary cables to plug into your graphics card in order to supply it power?
But as it stands, no, that pre built system's PSU is too low of wattage, and too low of quality to support a new graphics card (or any semi modern gaming GPU really), not to mention it most likely doesn't have the necessary cables for it.
While the wattage is low, you should be able to get away with a PCIe powered GPU which means the GPU cannot require external power from cables. Something low spec like the GTX 1650 is all you can put into that system assuming it will even fit inside (assuming you have the slim small form factor version, which I assume you most likely do)
But even then, you will probably max out the PSU's capabilities doing that.
If you do try to get a GPU, make sure that not only it does it only need to get power from the motherboard PCIe, but that it is a low profile card, so that it's not too wide and will fit in the space between the motherboard and the side panel (again, assuming you have the SFF version of the system)
Suffice it to say, you aren't going to be putting a GPU in that system that is meant for gaming, and is more designed to be better graphics output than the integrated graphics on the CPU for multiple displays, higher resolution displays, higher resolution playback of videos and streaming, HTPC usage, etc.
Of course with those low spec GPU's you can technically "game" on them, but you aren't playing newer AAA titles, and will have to play low spec games and old games.