Very few colleges give credit for SL but most do for HL exams. And that is very unfortunate because each SL is the equivalent of an AP in terms of effort and complexity and an HL is the equivalent of 2 APs. The IBO needs to negotiate better with universities in the US. In my research the universities that offer credit for SL exams are U Oregon, OSU, UF, FSU. There might be more but these i can confirm. Amongst private colleges, Reed values an IB HL as the equivalent of 2 APs (https://www.reed.edu/apply/guide-to-applying/first-year/ap-guide.html) but most value an AP at the same level as an HL.
My recommendation as a parent to a daughter who went to a top 25 nationally ranked school that only offers IB … take AP classes instead. My daughter has had to work extremely hard and is still being categorized with kids who took it easy and took 4 APs, while her workload and level is that of one who took 10 APs.