They may apply for an H-4 EAD (Employment Authorization Document) if the H-1B spouse has an approved I-140 or has extended H-1B beyond the 6-year limit.

If not eligible for H-4 EAD, they could change status to another work visa, such as H-1B, L-1, or O-1, if qualified.

Another option could be pursuing studies under F-1 and later applying for OPT/CPT.

Working without authorization is illegal and could result in denial of future immigration benefits.