It is important to temper expectations. V.Smile emulation is not like playing Super Mario Bros. on a laptop. Because the original console ran at a low resolution (roughly 640x480 interlaced) and the games were designed for CRT (Cathode Ray Tube) televisions, running these ROMs on a 4K monitor results in a very pixelated, blown-up image. Furthermore, many educational games rely on the "Smartridge" technology—a physical switch on the cartridge that detected the age of the child to adjust difficulty. Emulating that hardware switch is notoriously difficult.
Playing V.Smile ROMs on modern hardware requires specific emulators and system files. How to set up V.Tech V.Smile Emulation in MAME vtech v smile roms
Many ROM sites host these files, but they operate in a legal gray area. Use at your own risk. It is important to temper expectations