If the arrest was recent
Start with the county jail
West Virginia is unusual: it does NOT have county-run jails.
The state runs a REGIONAL JAIL system (the former Regional Jail Authority, now part of the Division of Corrections and Rehabilitation), so a person who was just arrested and not released is held in one of the state's regional jails - and those are searchable through the SAME OIS system's Regional Jail search (ois.wv.gov/RJA), a single statewide tool rather than dozens of separate county rosters.
West Virginia also participates in the national VINE system (WV DCR operates VINE / victim services), a free way to check custody status and register for alerts by phone, email, or text (search at vinelink.com or use the VINELink app).
For a very recent booking or bail details, call the regional jail.
West Virginia has NO county-run jails; the state operates regional jails under DCR. Use the OIS Regional Jail search (ois.wv.gov/RJA) for a just-arrested person, or WV VINE, and call the regional jail for recent bookings and bail amounts.